Version bump to 0.8.9
Added an option to skip the enumeration/sizing of tables (--skipsize), which should help on servers with lots of tables Changed the table enumeration/sizing method for MySQL 5 to use information_schema (increased performance drastically) Adjusted the query_cache_limit recommendation to include the currently set value, rather than 1M each time Changed the wording for tmp_table_size/max_heap_table_size to make it less confusing
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Major Hayden
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dc73ed5328
commit
6311b077cd
1 changed files with 63 additions and 41 deletions
104
mysqltuner.pl
104
mysqltuner.pl
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@ -1,5 +1,5 @@
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#!/usr/bin/perl -w
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# mysqltuner.pl - Version 0.8.6
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# mysqltuner.pl - Version 0.8.9
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# High Performance MySQL Tuning Script
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# Copyright (C) 2006-2008 Major Hayden - major@mhtx.net
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#
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@ -37,7 +37,7 @@ use diagnostics;
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use Getopt::Long;
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# Set up a few variables for use in the script
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my $tunerversion = "0.8.6";
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my $tunerversion = "0.8.9";
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my (@adjvars, @generalrec);
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# Set defaults
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@ -46,6 +46,7 @@ my %opt = (
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"nogood" => 0,
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"noinfo" => 0,
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"nocolor" => 0,
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"skipsize" => 0,
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);
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# Gather the options from the command line
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@ -54,6 +55,7 @@ GetOptions(\%opt,
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'nogood',
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'noinfo',
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'nocolor',
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'skipsize',
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'help',
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);
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@ -62,18 +64,21 @@ if (defined $opt{'help'} && $opt{'help'} == 1) { usage(); }
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sub usage {
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# Shown with --help option passed
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print "\n".
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" MySQLTuner $tunerversion - MySQL High Performance Tuning Script\n".
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" Bug reports, feature requests, and downloads at http://mysqltuner.com/\n".
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" Maintained by Major Hayden (major\@mhtx.net)\n\n".
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" Important Usage Guidelines:\n".
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" To run the script with the default options, run the script without arguments\n".
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" Allow MySQL server to run for at least 24-48 hours before trusting suggestions\n".
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" Some routines may require root level privileges (script will provide warnings)\n\n".
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" Output Options:\n".
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" --nogood Remove OK responses\n".
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" --nobad Remove negative/suggestion responses\n".
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" --noinfo Remove informational responses\n".
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" --nocolor Don't print output in color\n".
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" MySQLTuner $tunerversion - MySQL High Performance Tuning Script\n".
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" Bug reports, feature requests, and downloads at http://mysqltuner.com/\n".
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" Maintained by Major Hayden (major\@mhtx.net)\n\n".
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" Important Usage Guidelines:\n".
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" To run the script with the default options, run the script without arguments\n".
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" Allow MySQL server to run for at least 24-48 hours before trusting suggestions\n".
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" Some routines may require root level privileges (script will provide warnings)\n\n".
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" Performance and Reporting Options\n".
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" --skipsize Don't enumerate tables and their types/sizes\n".
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" (Recommended for servers with many tables)\n\n".
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" Output Options:\n".
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" --nogood Remove OK responses\n".
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" --nobad Remove negative/suggestion responses\n".
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" --noinfo Remove informational responses\n".
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" --nocolor Don't print output in color\n".
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"\n";
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exit;
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}
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@ -277,6 +282,11 @@ sub check_architecture {
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# Start up a ton of storage engine counts/statistics
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my (%enginestats,%enginecount);
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sub check_storage_engines {
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if ($opt{skipsize} eq 1) {
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print "\n-------- Storage Engine Statistics -------------------------------------------\n";
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infoprint "Skipped due to --skipsize option\n";
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return;
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}
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print "\n-------- Storage Engine Statistics -------------------------------------------\n";
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infoprint "Status: ";
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my $engines;
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@ -287,32 +297,44 @@ sub check_storage_engines {
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$engines .= (defined $myvar{'have_isam'} && $myvar{'have_isam'} eq "YES")? greenwrap "+ISAM " : redwrap "-ISAM " ;
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$engines .= (defined $myvar{'have_ndbcluster'} && $myvar{'have_ndbcluster'} eq "YES")? greenwrap "+NDBCluster " : redwrap "-NDBCluster " ;
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print "$engines\n";
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my @tblist;
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# Now we build a database list, and loop through it to get storage engine stats for tables
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my @dblist = `mysql $mysqllogin -Bse "SHOW DATABASES"`;
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foreach my $db (@dblist) {
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chomp($db);
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if ($db eq "information_schema") { next; }
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if ($mysqlvermajor == 3 || ($mysqlvermajor == 4 && $mysqlverminor == 0)) {
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# MySQL 3.23/4.0 keeps Data_Length in the 6th column
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push (@tblist,`mysql $mysqllogin -Bse "SHOW TABLE STATUS FROM \\\`$db\\\`" | awk '{print \$2,\$6}'`);
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} else {
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# MySQL 4.1+ keeps Data_Length in the 7th column
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push (@tblist,`mysql $mysqllogin -Bse "SHOW TABLE STATUS FROM \\\`$db\\\`" | awk '{print \$2,\$7}'`);
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}
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}
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# Parse through the table list to generate storage engine counts/statistics
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foreach my $line (@tblist) {
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$line =~ /([a-zA-Z_]*)\s*(.*)/;
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my $engine = $1;
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my $size = $2;
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if ($size !~ /^\d+$/) { $size = 0; }
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if (defined $enginestats{$engine}) {
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$enginestats{$engine} += $size;
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$enginecount{$engine} += 1;
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} else {
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if ($mysqlvermajor eq 5) {
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# MySQL 5 servers can have table sizes calculated quickly from information schema
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my @templist = `mysql $mysqllogin -Bse "SELECT ENGINE,SUM(DATA_LENGTH),COUNT(ENGINE) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema','mysql') GROUP BY ENGINE ORDER BY ENGINE ASC;"`;
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foreach my $line (@templist) {
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my ($engine,$size,$count);
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($engine,$size,$count) = $line =~ /([a-zA-Z_]*)\s+(\d+)\s+(\d+)/;
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$enginestats{$engine} = $size;
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$enginecount{$engine} = 1;
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$enginecount{$engine} = $count;
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}
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} else {
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# MySQL < 5 servers take a lot of work to get table sizes
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my @tblist;
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# Now we build a database list, and loop through it to get storage engine stats for tables
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my @dblist = `mysql $mysqllogin -Bse "SHOW DATABASES"`;
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foreach my $db (@dblist) {
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chomp($db);
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if ($db eq "information_schema") { next; }
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if ($mysqlvermajor == 3 || ($mysqlvermajor == 4 && $mysqlverminor == 0)) {
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# MySQL 3.23/4.0 keeps Data_Length in the 6th column
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push (@tblist,`mysql $mysqllogin -Bse "SHOW TABLE STATUS FROM \\\`$db\\\`" | awk '{print \$2,\$6}'`);
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} else {
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# MySQL 4.1+ keeps Data_Length in the 7th column
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push (@tblist,`mysql $mysqllogin -Bse "SHOW TABLE STATUS FROM \\\`$db\\\`" | awk '{print \$2,\$7}'`);
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}
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}
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# Parse through the table list to generate storage engine counts/statistics
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foreach my $line (@tblist) {
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$line =~ /([a-zA-Z_]*)\s+(.*)/;
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my $engine = $1;
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my $size = $2;
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if ($size !~ /^\d+$/) { $size = 0; }
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if (defined $enginestats{$engine}) {
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$enginestats{$engine} += $size;
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$enginecount{$engine} += 1;
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} else {
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$enginestats{$engine} = $size;
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$enginecount{$engine} = 1;
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}
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}
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}
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while (my ($engine,$size) = each(%enginestats)) {
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@ -538,7 +560,7 @@ sub mysql_stats {
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} else {
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if ($mycalc{'query_cache_efficiency'} < 20) {
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badprint "Query cache efficiency: $mycalc{'query_cache_efficiency'}%\n";
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push(@adjvars,"query_cache_limit (> 1M, or use smaller result sets)");
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push(@adjvars,"query_cache_limit (> ".hr_bytes_rnd($myvar{'query_cache_limit'}).", or use smaller result sets)");
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} else {
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goodprint "Query cache efficiency: $mycalc{'query_cache_efficiency'}%\n";
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}
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@ -578,7 +600,7 @@ sub mysql_stats {
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badprint "Temporary tables created on disk: $mycalc{'pct_temp_disk'}%\n";
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push(@adjvars,"tmp_table_size (> ".hr_bytes_rnd($myvar{'tmp_table_size'}).")");
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push(@adjvars,"max_heap_table_size (> ".hr_bytes_rnd($myvar{'max_heap_table_size'}).")");
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push(@generalrec,"Be sure that tmp_table_size/max_heap_table_size are equal");
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push(@generalrec,"When making adjustments, make tmp_table_size/max_heap_table_size equal");
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push(@generalrec,"Reduce your SELECT DISTINCT queries without LIMIT clauses");
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} elsif ($mycalc{'pct_temp_disk'} > 25 && $mycalc{'max_tmp_table_size'} >= 256) {
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badprint "Temporary tables created on disk: $mycalc{'pct_temp_disk'}%\n";
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