1635 lines
51 KiB
Bash
Executable File
1635 lines
51 KiB
Bash
Executable File
#!/bin/sh
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# vim: ts=8
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#########################################################################
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# #
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# MySQL performance tuning primer script #
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# Writen by: Matthew Montgomery #
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# Report bugs to: https://bugs.launchpad.net/mysql-tuning-primer #
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# Inspired by: MySQLARd (http://gert.sos.be/demo/mysqlar/) #
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# Version: 1.6-r1 Released: 2011-08-06 #
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# Licenced under GPLv2 #
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# #
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#########################################################################
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#########################################################################
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# #
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# Usage: ./tuning-primer.sh [ mode ] #
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# #
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# Available Modes: #
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# all : perform all checks (default) #
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# prompt : prompt for login credintials and socket #
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# and execution mode #
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# mem, memory : run checks for tunable options which #
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# effect memory usage #
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# disk, file : run checks for options which effect #
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# i/o performance or file handle limits #
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# innodb : run InnoDB checks /* to be improved */ #
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# misc : run checks for that don't categorise #
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# well Slow Queries, Binary logs, #
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# Used Connections and Worker Threads #
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#########################################################################
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# #
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# Set this socket variable ONLY if you have multiple instances running #
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# or we are unable to find your socket, and you don't want to to be #
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# prompted for input each time you run this script. #
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# #
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#########################################################################
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socket=
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export black='\033[0m'
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export boldblack='\033[1;0m'
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export red='\033[31m'
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export boldred='\033[1;31m'
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export green='\033[32m'
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export boldgreen='\033[1;32m'
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export yellow='\033[33m'
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export boldyellow='\033[1;33m'
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export blue='\033[34m'
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export boldblue='\033[1;34m'
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export magenta='\033[35m'
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export boldmagenta='\033[1;35m'
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export cyan='\033[36m'
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export boldcyan='\033[1;36m'
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export white='\033[37m'
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export boldwhite='\033[1;37m'
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cecho ()
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## -- Function to easliy print colored text -- ##
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# Color-echo.
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# Argument $1 = message
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# Argument $2 = color
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{
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local default_msg="No message passed."
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message=${1:-$default_msg} # Defaults to default message.
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#change it for fun
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#We use pure names
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color=${2:-black} # Defaults to black, if not specified.
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case $color in
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black)
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printf "$black" ;;
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boldblack)
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printf "$boldblack" ;;
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red)
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printf "$red" ;;
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boldred)
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printf "$boldred" ;;
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green)
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printf "$green" ;;
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boldgreen)
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printf "$boldgreen" ;;
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yellow)
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printf "$yellow" ;;
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boldyellow)
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printf "$boldyellow" ;;
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blue)
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printf "$blue" ;;
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boldblue)
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printf "$boldblue" ;;
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magenta)
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printf "$magenta" ;;
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boldmagenta)
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printf "$boldmagenta" ;;
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cyan)
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printf "$cyan" ;;
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boldcyan)
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printf "$boldcyan" ;;
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white)
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printf "$white" ;;
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boldwhite)
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printf "$boldwhite" ;;
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esac
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printf "%s\n" "$message"
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tput sgr0 # Reset to normal.
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printf "$black"
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return
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}
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cechon ()
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## -- Function to easliy print colored text -- ##
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# Color-echo.
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# Argument $1 = message
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# Argument $2 = color
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{
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local default_msg="No message passed."
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# Doesn't really need to be a local variable.
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message=${1:-$default_msg} # Defaults to default message.
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#change it for fun
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#We use pure names
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color=${2:-black} # Defaults to black, if not specified.
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case $color in
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black)
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printf "$black" ;;
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boldblack)
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printf "$boldblack" ;;
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red)
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printf "$red" ;;
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boldred)
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printf "$boldred" ;;
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green)
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printf "$green" ;;
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boldgreen)
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printf "$boldgreen" ;;
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yellow)
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printf "$yellow" ;;
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boldyellow)
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printf "$boldyellow" ;;
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blue)
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printf "$blue" ;;
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boldblue)
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printf "$boldblue" ;;
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magenta)
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printf "$magenta" ;;
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boldmagenta)
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printf "$boldmagenta" ;;
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cyan)
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printf "$cyan" ;;
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boldcyan)
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printf "$boldcyan" ;;
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white)
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printf "$white" ;;
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boldwhite)
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printf "$boldwhite" ;;
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esac
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printf "%s" "$message"
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tput sgr0 # Reset to normal.
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printf "$black"
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return
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}
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print_banner () {
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## -- Banner -- ##
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cecho " -- MYSQL PERFORMANCE TUNING PRIMER --" boldblue
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cecho " - By: Matthew Montgomery -" black
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}
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## -- Find the location of the mysql.sock file -- ##
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check_for_socket () {
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if [ -z "$socket" ] ; then
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# Use ~/my.cnf version
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if [ -f ~/.my.cnf ] ; then
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cnf_socket=$(grep ^socket ~/.my.cnf | awk -F \= '{ print $2 }' | head -1)
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fi
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if [ -S "$cnf_socket" ] ; then
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socket=$cnf_socket
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elif [ -S /var/lib/mysql/mysql.sock ] ; then
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socket=/var/lib/mysql/mysql.sock
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elif [ -S /var/run/mysqld/mysqld.sock ] ; then
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socket=/var/run/mysqld/mysqld.sock
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elif [ -S /tmp/mysql.sock ] ; then
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socket=/tmp/mysql.sock
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else
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if [ -S "$ps_socket" ] ; then
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socket=$ps_socket
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fi
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fi
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fi
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if [ -S "$socket" ] ; then
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echo UP > /dev/null
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else
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cecho "No valid socket file \"$socket\" found!" boldred
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cecho "The mysqld process is not running or it is installed in a custom location." red
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cecho "If you are sure mysqld is running, execute script in \"prompt\" mode or set " red
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cecho "the socket= variable at the top of this script" red
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exit 1
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fi
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}
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check_for_plesk_passwords () {
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## -- Check for the existance of plesk and login using it's credentials -- ##
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if [ -f /etc/psa/.psa.shadow ] ; then
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mysql="mysql -S $socket -u admin -p$(cat /etc/psa/.psa.shadow)"
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mysqladmin="mysqladmin -S $socket -u admin -p$(cat /etc/psa/.psa.shadow)"
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else
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mysql="mysql"
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mysqladmin="mysqladmin"
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# mysql="mysql -S $socket"
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# mysqladmin="mysqladmin -S $socket"
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fi
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}
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check_mysql_login () {
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## -- Test for running mysql -- ##
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is_up=$($mysqladmin ping 2>&1)
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if [ "$is_up" = "mysqld is alive" ] ; then
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echo UP > /dev/null
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# echo $is_up
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elif [ "$is_up" != "mysqld is alive" ] ; then
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printf "\n"
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cecho "Using login values from ~/.my.cnf"
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cecho "- INITIAL LOGIN ATTEMPT FAILED -" boldred
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if [ -z $prompted ] ; then
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find_webmin_passwords
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else
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return 1
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fi
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else
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cecho "Unknow exit status" red
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exit -1
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fi
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}
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final_login_attempt () {
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is_up=$($mysqladmin ping 2>&1)
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if [ "$is_up" = "mysqld is alive" ] ; then
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echo UP > /dev/null
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elif [ "$is_up" != "mysqld is alive" ] ; then
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cecho "- FINAL LOGIN ATTEMPT FAILED -" boldred
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cecho "Unable to log into socket: $socket" boldred
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exit 1
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fi
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}
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second_login_failed () {
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## -- create a ~/.my.cnf and exit when all else fails -- ##
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cecho "Could not auto detect login info!"
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cecho "Found potential sockets: $found_socks"
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cecho "Using: $socket" red
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read -p "Would you like to provide a different socket?: [y/N] " REPLY
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case $REPLY in
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yes | y | Y | YES)
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read -p "Socket: " socket
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;;
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esac
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read -p "Do you have your login handy ? [y/N] : " REPLY
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case $REPLY in
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yes | y | Y | YES)
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answer1='yes'
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read -p "User: " user
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read -rp "Password: " pass
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if [ -z $pass ] ; then
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export mysql="$mysql -S$socket -u$user"
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export mysqladmin="$mysqladmin -S$socket -u$user"
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else
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export mysql="$mysql -S$socket -u$user -p$pass"
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export mysqladmin="$mysqladmin -S$socket -u$user -p$pass"
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fi
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;;
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*)
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cecho "Please create a valid login to MySQL"
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cecho "Or, set correct values for 'user=' and 'password=' in ~/.my.cnf"
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;;
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esac
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cecho " "
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read -p "Would you like me to create a ~/.my.cnf file for you? [y/N] : " REPLY
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case $REPLY in
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yes | y | Y | YES)
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answer2='yes'
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if [ ! -f ~/.my.cnf ] ; then
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umask 077
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printf "[client]\nuser=$user\npassword=$pass\nsocket=$socket" > ~/.my.cnf
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if [ "$answer1" != 'yes' ] ; then
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exit 1
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else
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final_login_attempt
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return 0
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fi
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else
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printf "\n"
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cecho "~/.my.cnf already exists!" boldred
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printf "\n"
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read -p "Replace ? [y/N] : " REPLY
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if [ "$REPLY" = 'y' ] || [ "$REPLY" = 'Y' ] ; then
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printf "[client]\nuser=$user\npassword=$pass\socket=$socket" > ~/.my.cnf
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if [ "$answer1" != 'yes' ] ; then
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exit 1
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else
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final_login_attempt
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return 0
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fi
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else
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cecho "Please set the 'user=' and 'password=' and 'socket=' values in ~/.my.cnf"
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exit 1
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fi
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fi
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;;
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*)
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if [ "$answer1" != 'yes' ] ; then
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exit 1
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else
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final_login_attempt
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return 0
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fi
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;;
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esac
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}
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find_webmin_passwords () {
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## -- populate the .my.cnf file using values harvested from Webmin -- ##
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cecho "Testing for stored webmin passwords:"
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if [ -f /etc/webmin/mysql/config ] ; then
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user=$(grep ^login= /etc/webmin/mysql/config | cut -d "=" -f 2)
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pass=$(grep ^pass= /etc/webmin/mysql/config | cut -d "=" -f 2)
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if [ $user ] && [ $pass ] && [ ! -f ~/.my.cnf ] ; then
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cecho "Setting login info as User: $user Password: $pass"
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touch ~/.my.cnf
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chmod 600 ~/.my.cnf
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printf "[client]\nuser=$user\npassword=$pass" > ~/.my.cnf
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cecho "Retrying login"
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is_up=$($mysqladmin ping 2>&1)
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if [ "$is_up" = "mysqld is alive" ] ; then
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echo UP > /dev/null
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else
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second_login_failed
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fi
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echo
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else
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second_login_failed
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echo
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fi
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else
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cecho " None Found" boldred
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second_login_failed
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fi
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}
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#########################################################################
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# #
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# Function to pull MySQL status variable #
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# #
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# Call using : #
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# mysql_status \'Mysql_status_variable\' bash_dest_variable #
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# #
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#########################################################################
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mysql_status () {
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local status=$($mysql -Bse "show /*!50000 global */ status like $1" | awk '{ print $2 }')
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export "$2"=$status
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}
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#########################################################################
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# #
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# Function to pull MySQL server runtime variable #
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# #
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# Call using : #
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# mysql_variable \'Mysql_server_variable\' bash_dest_variable #
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# - OR - #
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# mysql_variableTSV \'Mysql_server_variable\' bash_dest_variable #
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# #
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#########################################################################
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mysql_variable () {
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local variable=$($mysql -Bse "show /*!50000 global */ variables like $1" | awk '{ print $2 }')
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export "$2"=$variable
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}
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mysql_variableTSV () {
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local variable=$($mysql -Bse "show /*!50000 global */ variables like $1" | awk -F \t '{ print $2 }')
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export "$2"=$variable
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}
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float2int () {
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local variable=$(echo "$1 / 1" | bc -l)
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export "$2"=$variable
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}
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divide () {
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# -- Divide two intigers -- #
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usage="$0 dividend divisor '$variable' scale"
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if [ $1 -ge 1 ] ; then
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dividend=$1
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else
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cecho "Invalid Dividend" red
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echo $usage
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exit 1
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fi
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if [ $2 -ge 1 ] ; then
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divisor=$2
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else
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cecho "Invalid Divisor" red
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echo $usage
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exit 1
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fi
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if [ ! -n $3 ] ; then
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cecho "Invalid variable name" red
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echo $usage
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exit 1
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fi
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if [ -z $4 ] ; then
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scale=2
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elif [ $4 -ge 0 ] ; then
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scale=$4
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else
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cecho "Invalid scale" red
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echo $usage
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exit 1
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fi
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export $3=$(echo "scale=$scale; $dividend / $divisor" | bc -l)
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}
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human_readable () {
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#########################################################################
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# #
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# Convert a value in to human readable size and populate a variable #
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# with the result. #
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# #
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# Call using: #
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# human_readable $value 'variable name' [ places of precision] #
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# #
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#########################################################################
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## value=$1
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## variable=$2
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scale=$3
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if [ $1 -ge 1073741824 ] ; then
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if [ -z $3 ] ; then
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scale=2
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fi
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divide $1 1073741824 "$2" $scale
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unit="G"
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elif [ $1 -ge 1048576 ] ; then
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if [ -z $3 ] ; then
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scale=0
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fi
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divide $1 1048576 "$2" $scale
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unit="M"
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elif [ $1 -ge 1024 ] ; then
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if [ -z $3 ] ; then
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scale=0
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fi
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divide $1 1024 "$2" $scale
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unit="K"
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else
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export "$2"=$1
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unit="bytes"
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fi
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# let "$2"=$HR
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}
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human_readable_time () {
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########################################################################
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# #
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# Function to produce human readable time #
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# #
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########################################################################
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usage="$0 seconds 'variable'"
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if [ -z $1 ] || [ -z $2 ] ; then
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cecho $usage red
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exit 1
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fi
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days=$(echo "scale=0 ; $1 / 86400" | bc -l)
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remainder=$(echo "scale=0 ; $1 % 86400" | bc -l)
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hours=$(echo "scale=0 ; $remainder / 3600" | bc -l)
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remainder=$(echo "scale=0 ; $remainder % 3600" | bc -l)
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minutes=$(echo "scale=0 ; $remainder / 60" | bc -l)
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seconds=$(echo "scale=0 ; $remainder % 60" | bc -l)
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export $2="$days days $hours hrs $minutes min $seconds sec"
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}
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check_mysql_version () {
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## -- Print Version Info -- ##
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mysql_variable \'version\' mysql_version
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mysql_variable \'version_compile_machine\' mysql_version_compile_machine
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if [ "$mysql_version_num" -lt 050000 ]; then
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cecho "MySQL Version $mysql_version $mysql_version_compile_machine is EOL please upgrade to MySQL 4.1 or later" boldred
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else
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cecho "MySQL Version $mysql_version $mysql_version_compile_machine"
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fi
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}
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post_uptime_warning () {
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#########################################################################
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# #
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# Present a reminder that mysql must run for a couple of days to #
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# build up good numbers in server status variables before these tuning #
|
|
# suggestions should be used. #
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|
# #
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|
#########################################################################
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mysql_status \'Uptime\' uptime
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mysql_status \'Threads_connected\' threads
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queries_per_sec=$(($questions/$uptime))
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human_readable_time $uptime uptimeHR
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cecho "Uptime = $uptimeHR"
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|
cecho "Avg. qps = $queries_per_sec"
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|
cecho "Total Questions = $questions"
|
|
cecho "Threads Connected = $threads"
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|
echo
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|
|
if [ $uptime -gt 172800 ] ; then
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cecho "Server has been running for over 48hrs."
|
|
cecho "It should be safe to follow these recommendations"
|
|
else
|
|
cechon "Warning: " boldred
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cecho "Server has not been running for at least 48hrs." boldred
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|
cecho "It may not be safe to use these recommendations" boldred
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fi
|
|
echo ""
|
|
cecho "To find out more information on how each of these" red
|
|
cecho "runtime variables effects performance visit:" red
|
|
if [ "$major_version" = '3.23' ] || [ "$major_version" = '4.0' ] || [ "$major_version" = '4.1' ] ; then
|
|
cecho "http://dev.mysql.com/doc/refman/4.1/en/server-system-variables.html" boldblue
|
|
elif [ "$major_version" = '5.0' ] || [ "$mysql_version_num" -gt '050100' ]; then
|
|
cecho "http://dev.mysql.com/doc/refman/$major_version/en/server-system-variables.html" boldblue
|
|
else
|
|
cecho "UNSUPPORTED MYSQL VERSION" boldred
|
|
exit 1
|
|
fi
|
|
cecho "Visit http://www.mysql.com/products/enterprise/advisors.html" boldblue
|
|
cecho "for info about MySQL's Enterprise Monitoring and Advisory Service" boldblue
|
|
}
|
|
|
|
check_slow_queries () {
|
|
|
|
## -- Slow Queries -- ##
|
|
|
|
cecho "SLOW QUERIES" boldblue
|
|
|
|
mysql_status \'Slow_queries\' slow_queries
|
|
mysql_variable \'long_query_time\' long_query_time
|
|
mysql_variable \'log%queries\' log_slow_queries
|
|
|
|
prefered_query_time=5
|
|
if [ -e /etc/my.cnf ] ; then
|
|
if [ -z $log_slow_queries ] ; then
|
|
log_slow_queries=$(grep log-slow-queries /etc/my.cnf)
|
|
fi
|
|
fi
|
|
|
|
if [ "$log_slow_queries" = 'ON' ] ; then
|
|
cecho "The slow query log is enabled."
|
|
elif [ "$log_slow_queries" = 'OFF' ] ; then
|
|
cechon "The slow query log is "
|
|
cechon "NOT" boldred
|
|
cecho " enabled."
|
|
elif [ -z $log_slow_queries ] ; then
|
|
cechon "The slow query log is "
|
|
cechon "NOT" boldred
|
|
cecho " enabled."
|
|
else
|
|
cecho "Error: $log_slow_queries" boldred
|
|
fi
|
|
cecho "Current long_query_time = $long_query_time sec."
|
|
cechon "You have "
|
|
cechon "$slow_queries" boldred
|
|
cechon " out of "
|
|
cechon "$questions" boldred
|
|
cecho " that take longer than $long_query_time sec. to complete"
|
|
|
|
float2int long_query_time long_query_timeInt
|
|
|
|
if [ $long_query_timeInt -gt $prefered_query_time ] ; then
|
|
cecho "Your long_query_time may be too high, I typically set this under $prefered_query_time sec." red
|
|
else
|
|
cecho "Your long_query_time seems to be fine" green
|
|
fi
|
|
|
|
}
|
|
|
|
check_binary_log () {
|
|
|
|
## -- Binary Log -- ##
|
|
|
|
cecho "BINARY UPDATE LOG" boldblue
|
|
|
|
mysql_variable \'log_bin\' log_bin
|
|
mysql_variable \'max_binlog_size\' max_binlog_size
|
|
mysql_variable \'expire_logs_days\' expire_logs_days
|
|
mysql_variable \'sync_binlog\' sync_binlog
|
|
# mysql_variable \'max_binlog_cache_size\' max_binlog_cache_size
|
|
|
|
if [ "$log_bin" = 'ON' ] ; then
|
|
cecho "The binary update log is enabled"
|
|
if [ -z "$max_binlog_size" ] ; then
|
|
cecho "The max_binlog_size is not set. The binary log will rotate when it reaches 1GB." red
|
|
fi
|
|
if [ "$expire_logs_days" -eq 0 ] ; then
|
|
cecho "The expire_logs_days is not set." boldred
|
|
cechon "The mysqld will retain the entire binary log until " red
|
|
cecho "RESET MASTER or PURGE MASTER LOGS commands are run manually" red
|
|
cecho "Setting expire_logs_days will allow you to remove old binary logs automatically" yellow
|
|
cecho "See http://dev.mysql.com/doc/refman/$major_version/en/purge-master-logs.html" yellow
|
|
fi
|
|
if [ "$sync_binlog" = 0 ] ; then
|
|
cecho "Binlog sync is not enabled, you could loose binlog records during a server crash" red
|
|
fi
|
|
else
|
|
cechon "The binary update log is "
|
|
cechon "NOT " boldred
|
|
cecho "enabled."
|
|
cecho "You will not be able to do point in time recovery" red
|
|
cecho "See http://dev.mysql.com/doc/refman/$major_version/en/point-in-time-recovery.html" yellow
|
|
fi
|
|
}
|
|
|
|
check_used_connections () {
|
|
|
|
## -- Used Connections -- ##
|
|
|
|
mysql_variable \'max_connections\' max_connections
|
|
mysql_status \'Max_used_connections\' max_used_connections
|
|
mysql_status \'Threads_connected\' threads_connected
|
|
|
|
connections_ratio=$(($max_used_connections*100/$max_connections))
|
|
|
|
cecho "MAX CONNECTIONS" boldblue
|
|
cecho "Current max_connections = $max_connections"
|
|
cecho "Current threads_connected = $threads_connected"
|
|
cecho "Historic max_used_connections = $max_used_connections"
|
|
cechon "The number of used connections is "
|
|
if [ $connections_ratio -ge 85 ] ; then
|
|
txt_color=red
|
|
error=1
|
|
elif [ $connections_ratio -le 10 ] ; then
|
|
txt_color=red
|
|
error=2
|
|
else
|
|
txt_color=green
|
|
error=0
|
|
fi
|
|
# cechon "$max_used_connections " $txt_color
|
|
# cechon "which is "
|
|
cechon "$connections_ratio% " $txt_color
|
|
cecho "of the configured maximum."
|
|
|
|
if [ $error -eq 1 ] ; then
|
|
cecho "You should raise max_connections" $txt_color
|
|
elif [ $error -eq 2 ] ; then
|
|
cecho "You are using less than 10% of your configured max_connections." $txt_color
|
|
cecho "Lowering max_connections could help to avoid an over-allocation of memory" $txt_color
|
|
cecho "See \"MEMORY USAGE\" section to make sure you are not over-allocating" $txt_color
|
|
else
|
|
cecho "Your max_connections variable seems to be fine." $txt_color
|
|
fi
|
|
unset txt_color
|
|
}
|
|
|
|
check_threads() {
|
|
|
|
## -- Worker Threads -- ##
|
|
|
|
cecho "WORKER THREADS" boldblue
|
|
|
|
mysql_status \'Threads_created\' threads_created1
|
|
sleep 1
|
|
mysql_status \'Threads_created\' threads_created2
|
|
|
|
mysql_status \'Threads_cached\' threads_cached
|
|
mysql_status \'Uptime\' uptime
|
|
mysql_variable \'thread_cache_size\' thread_cache_size
|
|
|
|
historic_threads_per_sec=$(($threads_created1/$uptime))
|
|
current_threads_per_sec=$(($threads_created2-$threads_created1))
|
|
|
|
cecho "Current thread_cache_size = $thread_cache_size"
|
|
cecho "Current threads_cached = $threads_cached"
|
|
cecho "Current threads_per_sec = $current_threads_per_sec"
|
|
cecho "Historic threads_per_sec = $historic_threads_per_sec"
|
|
|
|
if [ $historic_threads_per_sec -ge 2 ] && [ $threads_cached -le 1 ] ; then
|
|
cecho "Threads created per/sec are overrunning threads cached" red
|
|
cecho "You should raise thread_cache_size" red
|
|
elif [ $current_threads_per_sec -ge 2 ] ; then
|
|
cecho "Threads created per/sec are overrunning threads cached" red
|
|
cecho "You should raise thread_cache_size" red
|
|
else
|
|
cecho "Your thread_cache_size is fine" green
|
|
fi
|
|
}
|
|
|
|
check_key_buffer_size () {
|
|
|
|
## -- Key buffer Size -- ##
|
|
|
|
cecho "KEY BUFFER" boldblue
|
|
|
|
mysql_status \'Key_read_requests\' key_read_requests
|
|
mysql_status \'Key_reads\' key_reads
|
|
mysql_status \'Key_blocks_used\' key_blocks_used
|
|
mysql_status \'Key_blocks_unused\' key_blocks_unused
|
|
mysql_variable \'key_cache_block_size\' key_cache_block_size
|
|
mysql_variable \'key_buffer_size\' key_buffer_size
|
|
mysql_variable \'datadir\' datadir
|
|
mysql_variable \'version_compile_machine\' mysql_version_compile_machine
|
|
myisam_indexes=$($mysql -Bse "/*!50000 SELECT IFNULL(SUM(INDEX_LENGTH),0) from information_schema.TABLES where ENGINE='MyISAM' */")
|
|
|
|
if [ -z $myisam_indexes ] ; then
|
|
myisam_indexes=$(find $datadir -name '*.MYI' -exec du $duflags '{}' \; 2>&1 | awk '{ s += $1 } END { printf("%.0f\n", s )}')
|
|
fi
|
|
|
|
if [ $key_reads -eq 0 ] ; then
|
|
cecho "No key reads?!" boldred
|
|
cecho "Seriously look into using some indexes" red
|
|
key_cache_miss_rate=0
|
|
key_buffer_free=$(echo "$key_blocks_unused * $key_cache_block_size / $key_buffer_size * 100" | bc -l )
|
|
key_buffer_freeRND=$(echo "scale=0; $key_buffer_free / 1" | bc -l)
|
|
else
|
|
key_cache_miss_rate=$(($key_read_requests/$key_reads))
|
|
if [ ! -z $key_blocks_unused ] ; then
|
|
key_buffer_free=$(echo "$key_blocks_unused * $key_cache_block_size / $key_buffer_size * 100" | bc -l )
|
|
key_buffer_freeRND=$(echo "scale=0; $key_buffer_free / 1" | bc -l)
|
|
else
|
|
key_buffer_free='Unknown'
|
|
key_buffer_freeRND=75
|
|
fi
|
|
fi
|
|
|
|
human_readable $myisam_indexes myisam_indexesHR
|
|
cecho "Current MyISAM index space = $myisam_indexesHR $unit"
|
|
|
|
human_readable $key_buffer_size key_buffer_sizeHR
|
|
cecho "Current key_buffer_size = $key_buffer_sizeHR $unit"
|
|
cecho "Key cache miss rate is 1 : $key_cache_miss_rate"
|
|
cecho "Key buffer free ratio = $key_buffer_freeRND %"
|
|
|
|
if [ "$major_version" = '5.1' ] && [ $mysql_version_num -lt 050123 ] ; then
|
|
if [ $key_buffer_size -ge 4294967296 ] && ( echo "x86_64 ppc64 ia64 sparc64 i686" | grep -q $mysql_version_compile_machine ) ; then
|
|
cecho "Using key_buffer_size > 4GB will cause instability in versions prior to 5.1.23 " boldred
|
|
cecho "See Bug#5731, Bug#29419, Bug#29446" boldred
|
|
fi
|
|
fi
|
|
if [ "$major_version" = '5.0' ] && [ $mysql_version_num -lt 050052 ] ; then
|
|
if [ $key_buffer_size -ge 4294967296 ] && ( echo "x86_64 ppc64 ia64 sparc64 i686" | grep -q $mysql_version_compile_machine ) ; then
|
|
cecho "Using key_buffer_size > 4GB will cause instability in versions prior to 5.0.52 " boldred
|
|
cecho "See Bug#5731, Bug#29419, Bug#29446" boldred
|
|
fi
|
|
fi
|
|
if [ "$major_version" = '4.1' -o "$major_version" = '4.0' ] && [ $key_buffer_size -ge 4294967296 ] && ( echo "x86_64 ppc64 ia64 sparc64 i686" | grep -q $mysql_version_compile_machine ) ; then
|
|
cecho "Using key_buffer_size > 4GB will cause instability in versions prior to 5.0.52 " boldred
|
|
cecho "Reduce key_buffer_size to a safe value" boldred
|
|
cecho "See Bug#5731, Bug#29419, Bug#29446" boldred
|
|
fi
|
|
|
|
if [ $key_cache_miss_rate -le 100 ] && [ $key_cache_miss_rate -gt 0 ] && [ $key_buffer_freeRND -le 20 ]; then
|
|
cecho "You could increase key_buffer_size" boldred
|
|
cecho "It is safe to raise this up to 1/4 of total system memory;"
|
|
cecho "assuming this is a dedicated database server."
|
|
elif [ $key_buffer_freeRND -le 20 ] && [ $key_buffer_size -le $myisam_indexes ] ; then
|
|
cecho "You could increase key_buffer_size" boldred
|
|
cecho "It is safe to raise this up to 1/4 of total system memory;"
|
|
cecho "assuming this is a dedicated database server."
|
|
elif [ $key_cache_miss_rate -ge 10000 ] || [ $key_buffer_freeRND -le 50 ] ; then
|
|
cecho "Your key_buffer_size seems to be too high." red
|
|
cecho "Perhaps you can use these resources elsewhere" red
|
|
else
|
|
cecho "Your key_buffer_size seems to be fine" green
|
|
fi
|
|
}
|
|
|
|
check_query_cache () {
|
|
|
|
## -- Query Cache -- ##
|
|
|
|
cecho "QUERY CACHE" boldblue
|
|
|
|
mysql_variable \'version\' mysql_version
|
|
mysql_variable \'query_cache_size\' query_cache_size
|
|
mysql_variable \'query_cache_limit\' query_cache_limit
|
|
mysql_variable \'query_cache_min_res_unit\' query_cache_min_res_unit
|
|
mysql_status \'Qcache_free_memory\' qcache_free_memory
|
|
mysql_status \'Qcache_total_blocks\' qcache_total_blocks
|
|
mysql_status \'Qcache_free_blocks\' qcache_free_blocks
|
|
mysql_status \'Qcache_lowmem_prunes\' qcache_lowmem_prunes
|
|
|
|
if [ -z $query_cache_size ] ; then
|
|
cecho "You are using MySQL $mysql_version, no query cache is supported." red
|
|
cecho "I recommend an upgrade to MySQL 4.1 or better" red
|
|
elif [ $query_cache_size -eq 0 ] ; then
|
|
cecho "Query cache is supported but not enabled" red
|
|
cecho "Perhaps you should set the query_cache_size" red
|
|
else
|
|
qcache_used_memory=$(($query_cache_size-$qcache_free_memory))
|
|
qcache_mem_fill_ratio=$(echo "scale=2; $qcache_used_memory * 100 / $query_cache_size" | bc -l)
|
|
qcache_mem_fill_ratioHR=$(echo "scale=0; $qcache_mem_fill_ratio / 1" | bc -l)
|
|
|
|
cecho "Query cache is enabled" green
|
|
human_readable $query_cache_size query_cache_sizeHR
|
|
cecho "Current query_cache_size = $query_cache_sizeHR $unit"
|
|
human_readable $qcache_used_memory qcache_used_memoryHR
|
|
cecho "Current query_cache_used = $qcache_used_memoryHR $unit"
|
|
human_readable $query_cache_limit query_cache_limitHR
|
|
cecho "Current query_cache_limit = $query_cache_limitHR $unit"
|
|
cecho "Current Query cache Memory fill ratio = $qcache_mem_fill_ratio %"
|
|
if [ -z $query_cache_min_res_unit ] ; then
|
|
cecho "No query_cache_min_res_unit is defined. Using MySQL < 4.1 cache fragmentation can be inpredictable" %yellow
|
|
else
|
|
human_readable $query_cache_min_res_unit query_cache_min_res_unitHR
|
|
cecho "Current query_cache_min_res_unit = $query_cache_min_res_unitHR $unit"
|
|
fi
|
|
if [ $qcache_free_blocks -gt 2 ] && [ $qcache_total_blocks -gt 0 ] ; then
|
|
qcache_percent_fragmented=$(echo "scale=2; $qcache_free_blocks * 100 / $qcache_total_blocks" | bc -l)
|
|
qcache_percent_fragmentedHR=$(echo "scale=0; $qcache_percent_fragmented / 1" | bc -l)
|
|
if [ $qcache_percent_fragmentedHR -gt 20 ] ; then
|
|
cecho "Query Cache is $qcache_percent_fragmentedHR % fragmented" red
|
|
cecho "Run \"FLUSH QUERY CACHE\" periodically to defragment the query cache memory" red
|
|
cecho "If you have many small queries lower 'query_cache_min_res_unit' to reduce fragmentation." red
|
|
fi
|
|
fi
|
|
|
|
if [ $qcache_mem_fill_ratioHR -le 25 ] ; then
|
|
cecho "Your query_cache_size seems to be too high." red
|
|
cecho "Perhaps you can use these resources elsewhere" red
|
|
fi
|
|
if [ $qcache_lowmem_prunes -ge 50 ] && [ $qcache_mem_fill_ratioHR -ge 80 ]; then
|
|
cechon "However, "
|
|
cechon "$qcache_lowmem_prunes " boldred
|
|
cecho "queries have been removed from the query cache due to lack of memory"
|
|
cecho "Perhaps you should raise query_cache_size" boldred
|
|
fi
|
|
cecho "MySQL won't cache query results that are larger than query_cache_limit in size" yellow
|
|
fi
|
|
|
|
}
|
|
|
|
check_sort_operations () {
|
|
|
|
## -- Sort Operations -- ##
|
|
|
|
cecho "SORT OPERATIONS" boldblue
|
|
|
|
mysql_status \'Sort_merge_passes\' sort_merge_passes
|
|
mysql_status \'Sort_scan\' sort_scan
|
|
mysql_status \'Sort_range\' sort_range
|
|
mysql_variable \'sort_buffer%\' sort_buffer_size
|
|
mysql_variable \'read_rnd_buffer_size\' read_rnd_buffer_size
|
|
|
|
total_sorts=$(($sort_scan+$sort_range))
|
|
if [ -z $read_rnd_buffer_size ] ; then
|
|
mysql_variable \'record_buffer\' read_rnd_buffer_size
|
|
fi
|
|
|
|
## Correct for rounding error in mysqld where 512K != 524288 ##
|
|
sort_buffer_size=$(($sort_buffer_size+8))
|
|
read_rnd_buffer_size=$(($read_rnd_buffer_size+8))
|
|
|
|
human_readable $sort_buffer_size sort_buffer_sizeHR
|
|
cecho "Current sort_buffer_size = $sort_buffer_sizeHR $unit"
|
|
|
|
human_readable $read_rnd_buffer_size read_rnd_buffer_sizeHR
|
|
cechon "Current "
|
|
if [ "$major_version" = '3.23' ] ; then
|
|
cechon "record_rnd_buffer "
|
|
else
|
|
cechon "read_rnd_buffer_size "
|
|
fi
|
|
cecho "= $read_rnd_buffer_sizeHR $unit"
|
|
|
|
if [ $total_sorts -eq 0 ] ; then
|
|
cecho "No sort operations have been performed"
|
|
passes_per_sort=0
|
|
fi
|
|
if [ $sort_merge_passes -ne 0 ] ; then
|
|
passes_per_sort=$(($sort_merge_passes/$total_sorts))
|
|
else
|
|
passes_per_sort=0
|
|
fi
|
|
|
|
if [ $passes_per_sort -ge 2 ] ; then
|
|
cechon "On average "
|
|
cechon "$passes_per_sort " boldred
|
|
cecho "sort merge passes are made per sort operation"
|
|
cecho "You should raise your sort_buffer_size"
|
|
cechon "You should also raise your "
|
|
if [ "$major_version" = '3.23' ] ; then
|
|
cecho "record_rnd_buffer_size"
|
|
else
|
|
cecho "read_rnd_buffer_size"
|
|
fi
|
|
else
|
|
cecho "Sort buffer seems to be fine" green
|
|
fi
|
|
}
|
|
|
|
check_join_operations () {
|
|
|
|
## -- Joins -- ##
|
|
|
|
cecho "JOINS" boldblue
|
|
|
|
mysql_status \'Select_full_join\' select_full_join
|
|
mysql_status \'Select_range_check\' select_range_check
|
|
mysql_variable \'join_buffer%\' join_buffer_size
|
|
|
|
## Some 4K is dropped from join_buffer_size adding it back to make sane ##
|
|
## handling of human-readable conversion ##
|
|
|
|
join_buffer_size=$(($join_buffer_size+4096))
|
|
|
|
human_readable $join_buffer_size join_buffer_sizeHR 2
|
|
|
|
cecho "Current join_buffer_size = $join_buffer_sizeHR $unit"
|
|
cecho "You have had $select_full_join queries where a join could not use an index properly"
|
|
|
|
if [ $select_range_check -eq 0 ] && [ $select_full_join -eq 0 ] ; then
|
|
cecho "Your joins seem to be using indexes properly" green
|
|
fi
|
|
if [ $select_full_join -gt 0 ] ; then
|
|
print_error='true'
|
|
raise_buffer='true'
|
|
fi
|
|
if [ $select_range_check -gt 0 ] ; then
|
|
cecho "You have had $select_range_check joins without keys that check for key usage after each row" red
|
|
print_error='true'
|
|
raise_buffer='true'
|
|
fi
|
|
|
|
## For Debuging ##
|
|
# print_error='true'
|
|
if [ $join_buffer_size -ge 4194304 ] ; then
|
|
cecho "join_buffer_size >= 4 M" boldred
|
|
cecho "This is not advised" boldred
|
|
raise_buffer=
|
|
fi
|
|
|
|
if [ $print_error ] ; then
|
|
if [ "$major_version" = '3.23' ] || [ "$major_version" = '4.0' ] ; then
|
|
cecho "You should enable \"log-long-format\" "
|
|
elif [ "$mysql_version_num" -gt 040100 ]; then
|
|
cecho "You should enable \"log-queries-not-using-indexes\""
|
|
fi
|
|
cecho "Then look for non indexed joins in the slow query log."
|
|
if [ $raise_buffer ] ; then
|
|
cecho "If you are unable to optimize your queries you may want to increase your"
|
|
cecho "join_buffer_size to accommodate larger joins in one pass."
|
|
printf "\n"
|
|
cecho "Note! This script will still suggest raising the join_buffer_size when" boldred
|
|
cecho "ANY joins not using indexes are found." boldred
|
|
fi
|
|
fi
|
|
|
|
# XXX Add better tests for join_buffer_size pending mysql bug #15088 XXX #
|
|
}
|
|
|
|
check_tmp_tables () {
|
|
|
|
## -- Temp Tables -- ##
|
|
|
|
cecho "TEMP TABLES" boldblue
|
|
|
|
mysql_status \'Created_tmp_tables\' created_tmp_tables
|
|
mysql_status \'Created_tmp_disk_tables\' created_tmp_disk_tables
|
|
mysql_variable \'tmp_table_size\' tmp_table_size
|
|
mysql_variable \'max_heap_table_size\' max_heap_table_size
|
|
|
|
|
|
if [ $created_tmp_tables -eq 0 ] ; then
|
|
tmp_disk_tables=0
|
|
else
|
|
tmp_disk_tables=$((created_tmp_disk_tables*100/(created_tmp_tables+created_tmp_disk_tables)))
|
|
fi
|
|
human_readable $max_heap_table_size max_heap_table_sizeHR
|
|
cecho "Current max_heap_table_size = $max_heap_table_sizeHR $unit"
|
|
|
|
human_readable $tmp_table_size tmp_table_sizeHR
|
|
cecho "Current tmp_table_size = $tmp_table_sizeHR $unit"
|
|
|
|
cecho "Of $created_tmp_tables temp tables, $tmp_disk_tables% were created on disk"
|
|
if [ $tmp_table_size -gt $max_heap_table_size ] ; then
|
|
cecho "Effective in-memory tmp_table_size is limited to max_heap_table_size." yellow
|
|
fi
|
|
if [ $tmp_disk_tables -ge 25 ] ; then
|
|
cecho "Perhaps you should increase your tmp_table_size and/or max_heap_table_size" boldred
|
|
cecho "to reduce the number of disk-based temporary tables" boldred
|
|
cecho "Note! BLOB and TEXT columns are not allow in memory tables." yellow
|
|
cecho "If you are using these columns raising these values might not impact your " yellow
|
|
cecho "ratio of on disk temp tables." yellow
|
|
else
|
|
cecho "Created disk tmp tables ratio seems fine" green
|
|
fi
|
|
}
|
|
|
|
check_open_files () {
|
|
|
|
## -- Open Files Limit -- ##
|
|
cecho "OPEN FILES LIMIT" boldblue
|
|
|
|
mysql_variable \'open_files_limit\' open_files_limit
|
|
mysql_status \'Open_files\' open_files
|
|
|
|
if [ -z $open_files_limit ] || [ $open_files_limit -eq 0 ] ; then
|
|
open_files_limit=$(ulimit -n)
|
|
cant_override=1
|
|
else
|
|
cant_override=0
|
|
fi
|
|
cecho "Current open_files_limit = $open_files_limit files"
|
|
|
|
open_files_ratio=$(($open_files*100/$open_files_limit))
|
|
|
|
cecho "The open_files_limit should typically be set to at least 2x-3x" yellow
|
|
cecho "that of table_cache if you have heavy MyISAM usage." yellow
|
|
if [ $open_files_ratio -ge 75 ] ; then
|
|
cecho "You currently have open more than 75% of your open_files_limit" boldred
|
|
if [ $cant_override -eq 1 ] ; then
|
|
cecho "You should set a higer value for ulimit -u in the mysql startup script then restart mysqld" boldred
|
|
cecho "MySQL 3.23 users : This is just a guess based upon the current shell's ulimit -u value" yellow
|
|
elif [ $cant_override -eq 0 ] ; then
|
|
cecho "You should set a higher value for open_files_limit in my.cnf" boldred
|
|
else
|
|
cecho "ERROR can't determine if mysqld override of ulimit is allowed" boldred
|
|
exit 1
|
|
fi
|
|
else
|
|
cecho "Your open_files_limit value seems to be fine" green
|
|
fi
|
|
|
|
|
|
|
|
}
|
|
|
|
check_table_cache () {
|
|
|
|
## -- Table Cache -- ##
|
|
|
|
cecho "TABLE CACHE" boldblue
|
|
|
|
mysql_variable \'datadir\' datadir
|
|
mysql_variable \'table_cache\' table_cache
|
|
|
|
## /* MySQL +5.1 version of table_cache */ ##
|
|
mysql_variable \'table_open_cache\' table_open_cache
|
|
mysql_variable \'table_definition_cache\' table_definition_cache
|
|
|
|
mysql_status \'Open_tables\' open_tables
|
|
mysql_status \'Opened_tables\' opened_tables
|
|
mysql_status \'Open_table_definitions\' open_table_definitions
|
|
|
|
table_count=$($mysql -Bse "/*!50000 SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='BASE TABLE' */")
|
|
|
|
if [ -z "$table_count" ] ; then
|
|
if [ "$UID" != "$socket_owner" ] && [ "$UID" != "0" ] ; then
|
|
cecho "You are not '$socket_owner' or 'root'" red
|
|
cecho "I am unable to determine the table_count!" red
|
|
else
|
|
table_count=$(find $datadir 2>&1 | grep -c .frm$)
|
|
fi
|
|
fi
|
|
if [ $table_open_cache ] ; then
|
|
table_cache=$table_open_cache
|
|
fi
|
|
|
|
if [ $opened_tables -ne 0 ] && [ $table_cache -ne 0 ] ; then
|
|
table_cache_hit_rate=$(($open_tables*100/$opened_tables))
|
|
table_cache_fill=$(($open_tables*100/$table_cache))
|
|
elif [ $opened_tables -eq 0 ] && [ $table_cache -ne 0 ] ; then
|
|
table_cache_hit_rate=100
|
|
table_cache_fill=$(($open_tables*100/$table_cache))
|
|
else
|
|
cecho "ERROR no table_cache ?!" boldred
|
|
exit 1
|
|
fi
|
|
if [ $table_cache ] && [ ! $table_open_cache ] ; then
|
|
cecho "Current table_cache value = $table_cache tables"
|
|
fi
|
|
if [ $table_open_cache ] ; then
|
|
cecho "Current table_open_cache = $table_open_cache tables"
|
|
cecho "Current table_definition_cache = $table_definition_cache tables"
|
|
fi
|
|
if [ $table_count ] ; then
|
|
cecho "You have a total of $table_count tables"
|
|
fi
|
|
|
|
if [ $table_cache_fill -lt 95 ] ; then
|
|
cechon "You have "
|
|
cechon "$open_tables " green
|
|
cecho "open tables."
|
|
cecho "The table_cache value seems to be fine" green
|
|
elif [ $table_cache_hit_rate -le 85 -o $table_cache_fill -ge 95 ]; then
|
|
cechon "You have "
|
|
cechon "$open_tables " boldred
|
|
cecho "open tables."
|
|
cechon "Current table_cache hit rate is "
|
|
cecho "$table_cache_hit_rate%" boldred
|
|
cechon ", while "
|
|
cechon "$table_cache_fill% " boldred
|
|
cecho "of your table cache is in use"
|
|
cecho "You should probably increase your table_cache" red
|
|
else
|
|
cechon "Current table_cache hit rate is "
|
|
cechon "$table_cache_hit_rate%" green
|
|
cechon ", while "
|
|
cechon "$table_cache_fill% " green
|
|
cecho "of your table cache is in use"
|
|
cecho "The table cache value seems to be fine" green
|
|
fi
|
|
if [ $table_definition_cache ] && [ $table_definition_cache -le $table_count ] && [ $table_count -ge 100 ] ; then
|
|
cecho "You should probably increase your table_definition_cache value." red
|
|
fi
|
|
}
|
|
|
|
check_table_locking () {
|
|
|
|
## -- Table Locking -- ##
|
|
|
|
cecho "TABLE LOCKING" boldblue
|
|
|
|
mysql_status \'Table_locks_waited\' table_locks_waited
|
|
mysql_status \'Table_locks_immediate\' table_locks_immediate
|
|
mysql_variable \'concurrent_insert\' concurrent_insert
|
|
mysql_variable \'low_priority_updates\' low_priority_updates
|
|
if [ "$concurrent_insert" = 'ON' ]; then
|
|
concurrent_insert=1
|
|
elif [ "$concurrent_insert" = 'OFF' ]; then
|
|
concurrent_insert=0
|
|
fi
|
|
|
|
cechon "Current Lock Wait ratio = "
|
|
if [ $table_locks_waited -gt 0 ]; then
|
|
immediate_locks_miss_rate=$(($table_locks_immediate/$table_locks_waited))
|
|
cecho "1 : $immediate_locks_miss_rate" red
|
|
else
|
|
immediate_locks_miss_rate=99999 # perfect
|
|
cecho "0 : $questions"
|
|
fi
|
|
if [ $immediate_locks_miss_rate -lt 5000 ] ; then
|
|
cecho "You may benefit from selective use of InnoDB."
|
|
if [ "$low_priority_updates" = 'OFF' ] ; then
|
|
cecho "If you have long running SELECT's against MyISAM tables and perform"
|
|
cecho "frequent updates consider setting 'low_priority_updates=1'"
|
|
fi
|
|
if [ "$mysql_version_num" -gt 050000 ] && [ "$mysql_version_num" -lt 050500 ]; then
|
|
if [ $concurrent_insert -le 1 ] ; then
|
|
cecho "If you have a high concurrency of inserts on Dynamic row-length tables"
|
|
cecho "consider setting 'concurrent_insert=2'."
|
|
fi
|
|
elif [ "$mysql_version_num" -gt 050500 ] ; then
|
|
if [ "$concurrent_insert" = 'AUTO' ] || [ "$concurrent_insert" = 'NEVER' ] ; then
|
|
cecho "If you have a high concurrency of inserts on Dynamic row-length tables"
|
|
cecho "consider setting 'concurrent_insert=ALWAYS'."
|
|
fi
|
|
fi
|
|
else
|
|
cecho "Your table locking seems to be fine" green
|
|
fi
|
|
}
|
|
|
|
check_table_scans () {
|
|
|
|
## -- Table Scans -- ##
|
|
|
|
cecho "TABLE SCANS" boldblue
|
|
|
|
mysql_status \'Com_select\' com_select
|
|
mysql_status \'Handler_read_rnd_next\' read_rnd_next
|
|
mysql_variable \'read_buffer_size\' read_buffer_size
|
|
|
|
if [ -z $read_buffer_size ] ; then
|
|
mysql_variable \'record_buffer\' read_buffer_size
|
|
fi
|
|
|
|
human_readable $read_buffer_size read_buffer_sizeHR
|
|
cecho "Current read_buffer_size = $read_buffer_sizeHR $unit"
|
|
|
|
if [ $com_select -gt 0 ] ; then
|
|
full_table_scans=$(($read_rnd_next/$com_select))
|
|
cecho "Current table scan ratio = $full_table_scans : 1"
|
|
if [ $full_table_scans -ge 4000 ] && [ $read_buffer_size -le 2097152 ] ; then
|
|
cecho "You have a high ratio of sequential access requests to SELECTs" red
|
|
cechon "You may benefit from raising " red
|
|
if [ "$major_version" = '3.23' ] ; then
|
|
cechon "record_buffer " red
|
|
else
|
|
cechon "read_buffer_size " red
|
|
fi
|
|
cecho "and/or improving your use of indexes." red
|
|
elif [ $read_buffer_size -gt 8388608 ] ; then
|
|
cechon "read_buffer_size is over 8 MB " red
|
|
cecho "there is probably no need for such a large read_buffer" red
|
|
|
|
else
|
|
cecho "read_buffer_size seems to be fine" green
|
|
fi
|
|
else
|
|
cecho "read_buffer_size seems to be fine" green
|
|
fi
|
|
}
|
|
|
|
|
|
check_innodb_status () {
|
|
|
|
## -- InnoDB -- ##
|
|
|
|
## See http://bugs.mysql.com/59393
|
|
|
|
if [ "$mysql_version_num" -lt 050603 ] ; then
|
|
mysql_variable \'have_innodb\' have_innodb
|
|
fi
|
|
if [ "$mysql_version_num" -lt 050500 ] && [ "$have_innodb" = "YES" ] ; then
|
|
innodb_enabled=1
|
|
fi
|
|
if [ "$mysql_version_num" -ge 050500 ] && [ "$mysql_version_num" -lt 050512 ] ; then
|
|
mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb
|
|
if [ "$ignore_builtin_innodb" = "ON" ] || [ $have_innodb = "NO" ] ; then
|
|
innodb_enabled=0
|
|
else
|
|
innodb_enabled=1
|
|
fi
|
|
elif [ "$major_version" = '5.5' ] && [ "$mysql_version_num" -ge 050512 ] ; then
|
|
mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb
|
|
if [ "$ignore_builtin_innodb" = "ON" ] || [ $have_innodb = "DISABLED" ] ; then
|
|
innodb_enabled=0
|
|
else
|
|
innodb_enabled=1
|
|
fi
|
|
elif [ "$mysql_version_num" -ge 050600 ] && [ "$mysql_version_num" -lt 050603 ] ; then
|
|
mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb
|
|
if [ "$ignore_builtin_innodb" = "ON" ] || [ $have_innodb = "NO" ] ; then
|
|
innodb_enabled=0
|
|
else
|
|
innodb_enabled=1
|
|
fi
|
|
elif [ "$major_version" = '5.6' ] && [ "$mysql_version_num" -ge 050603 ] ; then
|
|
mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb
|
|
if [ "$ignore_builtin_innodb" = "ON" ] ; then
|
|
innodb_enabled=0
|
|
else
|
|
innodb_enabled=1
|
|
fi
|
|
fi
|
|
if [ "$innodb_enabled" = 1 ] ; then
|
|
mysql_variable \'innodb_buffer_pool_size\' innodb_buffer_pool_size
|
|
mysql_variable \'innodb_additional_mem_pool_size\' innodb_additional_mem_pool_size
|
|
mysql_variable \'innodb_fast_shutdown\' innodb_fast_shutdown
|
|
mysql_variable \'innodb_flush_log_at_trx_commit\' innodb_flush_log_at_trx_commit
|
|
mysql_variable \'innodb_locks_unsafe_for_binlog\' innodb_locks_unsafe_for_binlog
|
|
mysql_variable \'innodb_log_buffer_size\' innodb_log_buffer_size
|
|
mysql_variable \'innodb_log_file_size\' innodb_log_file_size
|
|
mysql_variable \'innodb_log_files_in_group\' innodb_log_files_in_group
|
|
mysql_variable \'innodb_safe_binlog\' innodb_safe_binlog
|
|
mysql_variable \'innodb_thread_concurrency\' innodb_thread_concurrency
|
|
|
|
cecho "INNODB STATUS" boldblue
|
|
innodb_indexes=$($mysql -Bse "/*!50000 SELECT IFNULL(SUM(INDEX_LENGTH),0) from information_schema.TABLES where ENGINE='InnoDB' */")
|
|
innodb_data=$($mysql -Bse "/*!50000 SELECT IFNULL(SUM(DATA_LENGTH),0) from information_schema.TABLES where ENGINE='InnoDB' */")
|
|
|
|
if [ ! -z "$innodb_indexes" ] ; then
|
|
|
|
mysql_status \'Innodb_buffer_pool_pages_data\' innodb_buffer_pool_pages_data
|
|
mysql_status \'Innodb_buffer_pool_pages_misc\' innodb_buffer_pool_pages_misc
|
|
mysql_status \'Innodb_buffer_pool_pages_free\' innodb_buffer_pool_pages_free
|
|
mysql_status \'Innodb_buffer_pool_pages_total\' innodb_buffer_pool_pages_total
|
|
|
|
mysql_status \'Innodb_buffer_pool_read_ahead_seq\' innodb_buffer_pool_read_ahead_seq
|
|
mysql_status \'Innodb_buffer_pool_read_requests\' innodb_buffer_pool_read_requests
|
|
|
|
mysql_status \'Innodb_os_log_pending_fsyncs\' innodb_os_log_pending_fsyncs
|
|
mysql_status \'Innodb_os_log_pending_writes\' innodb_os_log_pending_writes
|
|
mysql_status \'Innodb_log_waits\' innodb_log_waits
|
|
|
|
mysql_status \'Innodb_row_lock_time\' innodb_row_lock_time
|
|
mysql_status \'Innodb_row_lock_waits\' innodb_row_lock_waits
|
|
|
|
human_readable $innodb_indexes innodb_indexesHR
|
|
cecho "Current InnoDB index space = $innodb_indexesHR $unit"
|
|
human_readable $innodb_data innodb_dataHR
|
|
cecho "Current InnoDB data space = $innodb_dataHR $unit"
|
|
percent_innodb_buffer_pool_free=$(($innodb_buffer_pool_pages_free*100/$innodb_buffer_pool_pages_total))
|
|
cecho "Current InnoDB buffer pool free = "$percent_innodb_buffer_pool_free" %"
|
|
|
|
else
|
|
cecho "Cannot parse InnoDB stats prior to 5.0.x" red
|
|
$mysql -s -e "SHOW /*!50000 ENGINE */ INNODB STATUS\G"
|
|
fi
|
|
|
|
human_readable $innodb_buffer_pool_size innodb_buffer_pool_sizeHR
|
|
cecho "Current innodb_buffer_pool_size = $innodb_buffer_pool_sizeHR $unit"
|
|
cecho "Depending on how much space your innodb indexes take up it may be safe"
|
|
cecho "to increase this value to up to 2 / 3 of total system memory"
|
|
else
|
|
cecho "No InnoDB Support Enabled!" boldred
|
|
fi
|
|
}
|
|
|
|
total_memory_used () {
|
|
|
|
## -- Total Memory Usage -- ##
|
|
cecho "MEMORY USAGE" boldblue
|
|
|
|
mysql_variable \'read_buffer_size\' read_buffer_size
|
|
mysql_variable \'read_rnd_buffer_size\' read_rnd_buffer_size
|
|
mysql_variable \'sort_buffer_size\' sort_buffer_size
|
|
mysql_variable \'thread_stack\' thread_stack
|
|
mysql_variable \'max_connections\' max_connections
|
|
mysql_variable \'join_buffer_size\' join_buffer_size
|
|
mysql_variable \'tmp_table_size\' tmp_table_size
|
|
mysql_variable \'max_heap_table_size\' max_heap_table_size
|
|
mysql_variable \'log_bin\' log_bin
|
|
mysql_status \'Max_used_connections\' max_used_connections
|
|
|
|
if [ "$major_version" = "3.23" ] ; then
|
|
mysql_variable \'record_buffer\' read_buffer_size
|
|
mysql_variable \'record_rnd_buffer\' read_rnd_buffer_size
|
|
mysql_variable \'sort_buffer\' sort_buffer_size
|
|
fi
|
|
|
|
if [ "$log_bin" = "ON" ] ; then
|
|
mysql_variable \'binlog_cache_size\' binlog_cache_size
|
|
else
|
|
binlog_cache_size=0
|
|
fi
|
|
|
|
if [ $max_heap_table_size -le $tmp_table_size ] ; then
|
|
effective_tmp_table_size=$max_heap_table_size
|
|
else
|
|
effective_tmp_table_size=$tmp_table_size
|
|
fi
|
|
|
|
|
|
per_thread_buffers=$(echo "($read_buffer_size+$read_rnd_buffer_size+$sort_buffer_size+$thread_stack+$join_buffer_size+$binlog_cache_size)*$max_connections" | bc -l)
|
|
per_thread_max_buffers=$(echo "($read_buffer_size+$read_rnd_buffer_size+$sort_buffer_size+$thread_stack+$join_buffer_size+$binlog_cache_size)*$max_used_connections" | bc -l)
|
|
|
|
mysql_variable \'innodb_buffer_pool_size\' innodb_buffer_pool_size
|
|
if [ -z $innodb_buffer_pool_size ] ; then
|
|
innodb_buffer_pool_size=0
|
|
fi
|
|
|
|
mysql_variable \'innodb_additional_mem_pool_size\' innodb_additional_mem_pool_size
|
|
if [ -z $innodb_additional_mem_pool_size ] ; then
|
|
innodb_additional_mem_pool_size=0
|
|
fi
|
|
|
|
mysql_variable \'innodb_log_buffer_size\' innodb_log_buffer_size
|
|
if [ -z $innodb_log_buffer_size ] ; then
|
|
innodb_log_buffer_size=0
|
|
fi
|
|
|
|
mysql_variable \'key_buffer_size\' key_buffer_size
|
|
|
|
mysql_variable \'query_cache_size\' query_cache_size
|
|
if [ -z $query_cache_size ] ; then
|
|
query_cache_size=0
|
|
fi
|
|
|
|
global_buffers=$(echo "$innodb_buffer_pool_size+$innodb_additional_mem_pool_size+$innodb_log_buffer_size+$key_buffer_size+$query_cache_size" | bc -l)
|
|
|
|
|
|
max_memory=$(echo "$global_buffers+$per_thread_max_buffers" | bc -l)
|
|
total_memory=$(echo "$global_buffers+$per_thread_buffers" | bc -l)
|
|
|
|
pct_of_sys_mem=$(echo "scale=0; $total_memory*100/$physical_memory" | bc -l)
|
|
|
|
if [ $pct_of_sys_mem -gt 90 ] ; then
|
|
txt_color=boldred
|
|
error=1
|
|
else
|
|
txt_color=
|
|
error=0
|
|
fi
|
|
|
|
human_readable $max_memory max_memoryHR
|
|
cecho "Max Memory Ever Allocated : $max_memoryHR $unit" $txt_color
|
|
human_readable $per_thread_buffers per_thread_buffersHR
|
|
cecho "Configured Max Per-thread Buffers : $per_thread_buffersHR $unit" $txt_color
|
|
human_readable $global_buffers global_buffersHR
|
|
cecho "Configured Max Global Buffers : $global_buffersHR $unit" $txt_color
|
|
human_readable $total_memory total_memoryHR
|
|
cecho "Configured Max Memory Limit : $total_memoryHR $unit" $txt_color
|
|
# human_readable $effective_tmp_table_size effective_tmp_table_sizeHR
|
|
# cecho "Plus $effective_tmp_table_sizeHR $unit per temporary table created"
|
|
human_readable $physical_memory physical_memoryHR
|
|
cecho "Physical Memory : $physical_memoryHR $unit" $txt_color
|
|
if [ $error -eq 1 ] ; then
|
|
printf "\n"
|
|
cecho "Max memory limit exceeds 90% of physical memory" $txt_color
|
|
else
|
|
cecho "Max memory limit seem to be within acceptable norms" green
|
|
fi
|
|
unset txt_color
|
|
}
|
|
|
|
## Required Functions ##
|
|
|
|
login_validation () {
|
|
check_for_socket # determine the socket location -- 1st login
|
|
check_for_plesk_passwords # determine the login method -- 2nd login
|
|
check_mysql_login # determine if mysql is accepting login -- 3rd login
|
|
export major_version=$($mysql -Bse "SELECT SUBSTRING_INDEX(VERSION(), '.', +2)")
|
|
# export mysql_version_num=$($mysql -Bse "SELECT LEFT(REPLACE(SUBSTRING_INDEX(VERSION(), '-', +1), '.', ''),4)" )
|
|
export mysql_version_num=$($mysql -Bse "SELECT VERSION()" |
|
|
awk -F \. '{ printf "%02d", $1; printf "%02d", $2; printf "%02d", $3 }')
|
|
|
|
}
|
|
|
|
shared_info () {
|
|
export major_version=$($mysql -Bse "SELECT SUBSTRING_INDEX(VERSION(), '.', +2)")
|
|
# export mysql_version_num=$($mysql -Bse "SELECT LEFT(REPLACE(SUBSTRING_INDEX(VERSION(), '-', +1), '.', ''),4)" )
|
|
export mysql_version_num=$($mysql -Bse "SELECT VERSION()" |
|
|
awk -F \. '{ printf "%02d", $1; printf "%02d", $2; printf "%02d", $3 }')
|
|
mysql_status \'Questions\' questions
|
|
# socket_owner=$(find -L $socket -printf '%u\n')
|
|
socket_owner=$(ls -nH $socket | awk '{ print $3 }')
|
|
}
|
|
|
|
|
|
get_system_info () {
|
|
|
|
export OS=$(uname)
|
|
|
|
# Get information for various UNIXes
|
|
if [ "$OS" = 'Darwin' ]; then
|
|
ps_socket=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }' | head -1)
|
|
found_socks=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }')
|
|
export physical_memory=$(sysctl -n hw.memsize)
|
|
export duflags=''
|
|
elif [ "$OS" = 'FreeBSD' ] || [ "$OS" = 'OpenBSD' ]; then
|
|
## On FreeBSD must be root to locate sockets.
|
|
ps_socket=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }' | head -1)
|
|
found_socks=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }')
|
|
export physical_memory=$(sysctl -n hw.realmem)
|
|
export duflags=''
|
|
elif [ "$OS" = 'Linux' ] ; then
|
|
## Includes SWAP
|
|
## export physical_memory=$(free -b | grep -v buffers | awk '{ s += $2 } END { printf("%.0f\n", s ) }')
|
|
ps_socket=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }' | head -1)
|
|
found_socks=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }')
|
|
export physical_memory=$(awk '/^MemTotal/ { printf("%.0f", $2*1024 ) }' < /proc/meminfo)
|
|
export duflags='-b'
|
|
elif [ "$OS" = 'SunOS' ] ; then
|
|
ps_socket=$(netstat -an | awk '/mysql(.*)?.sock/ { print $5 }' | head -1)
|
|
found_socks=$(netstat -an | awk '/mysql(.*)?.sock/ { print $5 }')
|
|
export physical_memory=$(prtconf | awk '/^Memory\ size:/ { print $3*1048576 }')
|
|
fi
|
|
if [ -z $(which bc) ] ; then
|
|
echo "Error: Command line calculator 'bc' not found!"
|
|
exit
|
|
fi
|
|
}
|
|
|
|
|
|
## Optional Components Groups ##
|
|
|
|
banner_info () {
|
|
shared_info
|
|
print_banner ; echo
|
|
check_mysql_version ; echo
|
|
post_uptime_warning ; echo
|
|
}
|
|
|
|
misc () {
|
|
shared_info
|
|
check_slow_queries ; echo
|
|
check_binary_log ; echo
|
|
check_threads ; echo
|
|
check_used_connections ; echo
|
|
check_innodb_status ; echo
|
|
}
|
|
|
|
memory () {
|
|
shared_info
|
|
total_memory_used ; echo
|
|
check_key_buffer_size ; echo
|
|
check_query_cache ; echo
|
|
check_sort_operations ; echo
|
|
check_join_operations ; echo
|
|
}
|
|
|
|
file () {
|
|
shared_info
|
|
check_open_files ; echo
|
|
check_table_cache ; echo
|
|
check_tmp_tables ; echo
|
|
check_table_scans ; echo
|
|
check_table_locking ; echo
|
|
}
|
|
|
|
all () {
|
|
banner_info
|
|
misc
|
|
memory
|
|
file
|
|
}
|
|
|
|
prompt () {
|
|
prompted='true'
|
|
read -p "Username [anonymous] : " user
|
|
read -rp "Password [<none>] : " pass
|
|
cecho " "
|
|
read -p "Socket [ /var/lib/mysql/mysql.sock ] : " socket
|
|
if [ -z $socket ] ; then
|
|
export socket='/var/lib/mysql/mysql.sock'
|
|
fi
|
|
|
|
if [ -z $pass ] ; then
|
|
export mysql="mysql -S $socket -u$user"
|
|
export mysqladmin="mysqladmin -S $socket -u$user"
|
|
else
|
|
export mysql="mysql -S $socket -u$user -p$pass"
|
|
export mysqladmin="mysqladmin -S $socket -u$user -p$pass"
|
|
fi
|
|
|
|
check_for_socket
|
|
check_mysql_login
|
|
|
|
if [ $? = 1 ] ; then
|
|
exit 1
|
|
fi
|
|
read -p "Mode to test - banner, file, misc, mem, innodb, [all] : " REPLY
|
|
if [ -z $REPLY ] ; then
|
|
REPLY='all'
|
|
fi
|
|
case $REPLY in
|
|
banner | BANNER | header | HEADER | head | HEAD)
|
|
banner_info
|
|
;;
|
|
misc | MISC | miscelaneous )
|
|
misc
|
|
;;
|
|
mem | memory | MEM | MEMORY )
|
|
memory
|
|
;;
|
|
file | FILE | disk | DISK )
|
|
file
|
|
;;
|
|
innodb | INNODB )
|
|
innodb
|
|
;;
|
|
all | ALL )
|
|
cecho " "
|
|
all
|
|
;;
|
|
* )
|
|
cecho "Invalid Mode! Valid options are 'banner', 'misc', 'memory', 'file', 'innodb' or 'all'" boldred
|
|
exit 1
|
|
;;
|
|
esac
|
|
}
|
|
|
|
## Address environmental differences ##
|
|
get_system_info
|
|
# echo $ps_socket
|
|
|
|
if [ -z "$1" ] ; then
|
|
login_validation
|
|
mode='ALL'
|
|
elif [ "$1" = "prompt" ] || [ "$1" = "PROMPT" ] ; then
|
|
mode=$1
|
|
elif [ "$1" != "prompt" ] || [ "$1" != "PROMPT" ] ; then
|
|
login_validation
|
|
mode=$1
|
|
fi
|
|
|
|
case $mode in
|
|
all | ALL )
|
|
cecho " "
|
|
all
|
|
;;
|
|
mem | memory | MEM | MEMORY )
|
|
cecho " "
|
|
memory
|
|
;;
|
|
file | FILE | disk | DISK )
|
|
cecho " "
|
|
file
|
|
;;
|
|
banner | BANNER | header | HEADER | head | HEAD )
|
|
banner_info
|
|
;;
|
|
misc | MISC | miscelaneous )
|
|
cecho " "
|
|
misc
|
|
;;
|
|
innodb | INNODB )
|
|
banner_info
|
|
check_innodb_status ; echo
|
|
;;
|
|
prompt | PROMPT )
|
|
prompt
|
|
;;
|
|
*)
|
|
cecho "usage: $0 [ all | banner | file | innodb | memory | misc | prompt ]" boldred
|
|
exit 1
|
|
;;
|
|
esac
|