Adding information about Max and Reached memory for MySQL process.
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2 changed files with 76 additions and 37 deletions
3
USAGE.md
3
USAGE.md
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@ -1,6 +1,6 @@
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# NAME
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MySQLTuner 1.4.5 - MySQL High Performance Tuning Script
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MySQLTuner 1.4.6 - MySQL High Performance Tuning Script
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# IMPORTANT USAGE GUIDELINES
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@ -36,6 +36,7 @@ You must provide the remote server's total memory when connecting to other serve
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--noinfo Remove informational responses
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--debug Print debug information
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--dbstat Print database information
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--idxstat Print index information
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--nocolor Don't print output in color
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--buffers Print global and per-thread buffer values
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@ -1,5 +1,5 @@
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#!/usr/bin/perl -w
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# mysqltuner.pl - Version 1.4.5
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# mysqltuner.pl - Version 1.4.6
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# High Performance MySQL Tuning Script
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# Copyright (C) 2006-2015 Major Hayden - major@mhtx.net
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#
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@ -43,7 +43,7 @@ use File::Basename;
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use Cwd 'abs_path';
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#use Data::Dumper qw/Dumper/;
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# Set up a few variables for use in the script
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my $tunerversion = "1.4.5";
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my $tunerversion = "1.4.6";
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my (@adjvars, @generalrec);
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# Set defaults
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@ -66,6 +66,7 @@ my %opt = (
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"passwordfile" => 0,
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"reportfile" => 0,
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"dbstat" => 0,
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"idxstat" => 0,
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);
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@ -93,14 +94,14 @@ GetOptions(\%opt,
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'reportfile=s',
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'silent',
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'dbstat',
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'idxstat',
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);
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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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print " 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) - Licensed under GPL\n".
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"\n".
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@ -134,9 +135,9 @@ sub usage {
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" --noinfo Remove informational responses\n".
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" --debug Print debug information\n".
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" --dbstat Print database information\n".
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" --idxstat Print index information\n".
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" --nocolor Don't print output in color\n".
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" --buffers Print global and per-thread buffer values\n".
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"\n";
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" --buffers Print global and per-thread buffer values\n";
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exit;
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}
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@ -218,6 +219,7 @@ sub hr_num {
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sub percentage{
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my $value=shift;
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my $total=shift;
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$total=0 unless defined $total;
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return 100,00 if $total == 0;
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return sprintf("%.2f", ($value*100/$total) );
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}
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@ -551,7 +553,7 @@ sub security_recommendations {
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}
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unless (-f $basic_password_files) {
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badprint "There is not basic password file list !";
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badprint "There is not basic password file list !\n";
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return;
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}
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@ -728,9 +730,7 @@ sub check_storage_engines {
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my @dblist = `$mysqlcmd $mysqllogin -Bse "SHOW DATABASES"`;
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foreach my $db (@dblist) {
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chomp($db);
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if ($db eq "information_schema") { next; }
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if ($db eq "performance_schema") { next; }
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if ($db eq "mysql") { next; }
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if ($db eq "information_schema" or $db eq "performance_schema" or $db eq "mysql") { next; }
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my @ixs = (1, 6, 9);
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if (!mysql_version_ge(4, 1)) {
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# MySQL 3.23/4.0 keeps Data_Length in the 5th (0-based) column
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@ -848,6 +848,21 @@ sub calculations {
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$mycalc{'total_possible_used_memory'} = $mycalc{'server_buffers'} + $mycalc{'total_per_thread_buffers'};
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$mycalc{'pct_physical_memory'} = int(($mycalc{'total_possible_used_memory'} * 100) / $physical_memory);
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# Maximum memory limit
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$mycalc{'max_peak_memory'}=0;
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foreach my $key ( 'key_buffer_size', 'query_cache_size', 'tmp_table_size',
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'innodb_buffer_pool_size', 'innodb_additional_mem_pool_size',
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'innodb_log_buffer_size') {
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$mycalc{'max_peak_memory'}+=$myvar{$key} if defined $myvar{$key};
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}
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foreach my $key ( 'sort_buffer_size', 'read_buffer_size', 'read_rnd_buffer_size', 'join_buffer_size',
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'thread_stack', 'binlog_cache_size' ) {
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$mycalc{'max_peak_memory'}+=($myvar{$key}*$myvar{'max_connections'}) if defined $myvar{$key};
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}
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debugprint "Max Peak Memory: ".hr_bytes($mycalc{'max_peak_memory'})."\n";
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$mycalc{'pct_max_physical_memory'} = percentage($mycalc{'max_peak_memory'}, $physical_memory);
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debugprint "Max Percentage RAM: ".$mycalc{'pct_max_physical_memory'}."%\n";
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# Slow queries
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$mycalc{'pct_slow_queries'} = int(($mystat{'Slow_queries'}/$mystat{'Questions'}) * 100);
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@ -1031,12 +1046,18 @@ sub mysql_stats {
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if ($arch && $arch == 32 && $mycalc{'total_possible_used_memory'} > 2*1024*1024*1024) {
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badprint "Allocating > 2GB RAM on 32-bit systems can cause system instability\n";
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badprint "Maximum possible memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n";
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badprint "Maximum reached memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n";
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} elsif ($mycalc{'pct_physical_memory'} > 85) {
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badprint "Maximum possible memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n";
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badprint "Maximum reached memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n";
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} else {
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goodprint "Maximum reached memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n";
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}
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if ($mycalc{'pct_max_physical_memory'} > 85) {
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badprint "Maximum possible memory usage: ".hr_bytes($mycalc{'max_peak_memory'})." ($mycalc{'pct_max_physical_memory'}% of installed RAM)\n";
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push(@generalrec,"Reduce your overall MySQL memory footprint for system stability");
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} else {
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goodprint "Maximum possible memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n";
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goodprint "Maximum possible memory usage: ".hr_bytes($mycalc{'max_peak_memory'})." ($mycalc{'pct_max_physical_memory'}% of installed RAM)\n";
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}
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# Slow queries
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@ -1355,36 +1376,51 @@ sub mysql_innodb {
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}
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}
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# Recommandations for Innodb
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# Recommandations for MySQL Databases
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sub mysql_databases {
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if ($opt{dbstat} == 0) {
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return;
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}
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prettyprint "\n-------- Database Metrics ------------------------------------------------\n";
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unless (mysql_version_ge(5,5)) {
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infoprint "Skip Database metrics from information schema \n";
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infoprint "Skip Database metrics from information schema missing in this version\n";
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return;
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}
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my @dblist=select_array("SHOW DATABASES;");
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infoprint "There is ".scalar(@dblist). " Database(s).\n";
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my @totaldbinfo=split /\s/, select_one("SELECT SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH) FROM information_schema.TABLES");
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my @totaldbinfo=split /\s/, select_one("SELECT SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('mysql', 'performance_schema', 'information_schema');");
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infoprint "All Databases:\n";
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infoprint " +-- ROWS : ".($totaldbinfo[0] eq 'NULL'?0:$totaldbinfo[0])."\n";
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infoprint " +-- DATA : ".hr_bytes($totaldbinfo[1])."(".percentage($totaldbinfo[1], $totaldbinfo[3])."%)\n";
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infoprint " +-- INDEX: ".hr_bytes($totaldbinfo[2])."(".percentage($totaldbinfo[2], $totaldbinfo[3])."%)\n";
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infoprint " +-- SIZE : ".hr_bytes($totaldbinfo[3])."\n";
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badprint "Index size is larger than data size \n" if $totaldbinfo[1]<$totaldbinfo[2];
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foreach (@dblist) {
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my @dbinfo=split /\s/, select_one("SELECT TABLE_SCHEMA, SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH) FROM information_schema.TABLES WHERE TABLE_SCHEMA='$_' GROUP BY TABLE_SCHEMA ORDER BY TABLE_SCHEMA");
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chomp($_);
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if ( $_ eq "information_schema" or $_ eq "performance_schema" or $_ eq "mysql" ) { next; }
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my @dbinfo=split /\s/, select_one("SELECT TABLE_SCHEMA, SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH), COUNT(DISTINCT ENGINE) FROM information_schema.TABLES WHERE TABLE_SCHEMA='$_' GROUP BY TABLE_SCHEMA ORDER BY TABLE_SCHEMA");
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infoprint "Database: ".$dbinfo[0]."\n";
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infoprint " +-- ROWS : ".($dbinfo[1] eq 'NULL'?0:$dbinfo[1])."\n";
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infoprint " +-- ROWS : ".(!defined($dbinfo[1]) or $dbinfo[1] eq 'NULL'?0:$dbinfo[1])."\n";
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infoprint " +-- DATA : ".hr_bytes($dbinfo[2])."(".percentage($dbinfo[2], $dbinfo[4])."%)\n";
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infoprint " +-- INDEX: ".hr_bytes($dbinfo[3])."(".percentage($dbinfo[3], $dbinfo[4])."%)\n";
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infoprint " +-- TOTAL: ".hr_bytes($dbinfo[4])."\n";
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badprint "Index size is larger than data size for $dbinfo[0] \n" if $dbinfo[2]<$dbinfo[3];
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badprint "There ".$dbinfo[5]. " storage engines. Be careful \n" if $dbinfo[5]>1;
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}
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}
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# Recommandations for MySQL Databases
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sub mysql_indexes {
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return if ($opt{idxstat} == 0);
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prettyprint "\n-------- Indexes Metrics -------------------------------------------------\n";
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unless (mysql_version_ge(5,5)) {
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infoprint "Skip Index metrics from information schema missing in this version\n";
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return;
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}
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}
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# Take the two recommendation arrays and display them at the end of the output
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sub make_recommendations {
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prettyprint "\n-------- Recommendations -----------------------------------------------------\n";
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@ -1420,6 +1456,7 @@ validate_mysql_version; # Check current MySQL version
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check_architecture; # Suggest 64-bit upgrade
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check_storage_engines; # Show enabled storage engines
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mysql_databases; # Show informations about databases
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mysql_indexes; # Show informations about indexes
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security_recommendations; # Display some security recommendations
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calculations; # Calculate everything we need
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mysql_stats; # Print the server stats
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@ -1439,7 +1476,7 @@ __END__
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=head1 NAME
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MySQLTuner 1.4.5 - MySQL High Performance Tuning Script
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MySQLTuner 1.4.6 - MySQL High Performance Tuning Script
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=head1 IMPORTANT USAGE GUIDELINES
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@ -1475,6 +1512,7 @@ You must provide the remote server's total memory when connecting to other serve
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--noinfo Remove informational responses
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--debug Print debug information
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--dbstat Print database information
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--idxstat Print index information
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--nocolor Don't print output in color
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--buffers Print global and per-thread buffer values
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