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Version bump to 0.8.9

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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
This commit is contained in:
Major Hayden 2008-04-05 16:34:57 +00:00
parent dc73ed5328
commit 6311b077cd
1 changed files with 63 additions and 41 deletions
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104
mysqltuner.pl
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@ -1,5 +1,5 @@
#!/usr/bin/perl -w #!/usr/bin/perl -w
# mysqltuner.pl - Version 0.8.6 # mysqltuner.pl - Version 0.8.9
# High Performance MySQL Tuning Script # High Performance MySQL Tuning Script
# Copyright (C) 2006-2008 Major Hayden - major@mhtx.net # Copyright (C) 2006-2008 Major Hayden - major@mhtx.net
# #
@ -37,7 +37,7 @@ use diagnostics;
use Getopt::Long; use Getopt::Long;
# Set up a few variables for use in the script # Set up a few variables for use in the script
my $tunerversion = "0.8.6"; my $tunerversion = "0.8.9";
my (@adjvars, @generalrec); my (@adjvars, @generalrec);
# Set defaults # Set defaults
@ -46,6 +46,7 @@ my %opt = (
"nogood" => 0, "nogood" => 0,
"noinfo" => 0, "noinfo" => 0,
"nocolor" => 0, "nocolor" => 0,
"skipsize" => 0,
); );
# Gather the options from the command line # Gather the options from the command line
@ -54,6 +55,7 @@ GetOptions(\%opt,
'nogood', 'nogood',
'noinfo', 'noinfo',
'nocolor', 'nocolor',
'skipsize',
'help', 'help',
); );
@ -62,18 +64,21 @@ if (defined $opt{'help'} && $opt{'help'} == 1) { usage(); }
sub usage { sub usage {
# Shown with --help option passed # Shown with --help option passed
print "\n". print "\n".
" MySQLTuner $tunerversion - MySQL High Performance Tuning Script\n". " MySQLTuner $tunerversion - MySQL High Performance Tuning Script\n".
" Bug reports, feature requests, and downloads at http://mysqltuner.com/\n". " Bug reports, feature requests, and downloads at http://mysqltuner.com/\n".
" Maintained by Major Hayden (major\@mhtx.net)\n\n". " Maintained by Major Hayden (major\@mhtx.net)\n\n".
" Important Usage Guidelines:\n". " Important Usage Guidelines:\n".
" To run the script with the default options, run the script without arguments\n". " To run the script with the default options, run the script without arguments\n".
" Allow MySQL server to run for at least 24-48 hours before trusting suggestions\n". " Allow MySQL server to run for at least 24-48 hours before trusting suggestions\n".
" Some routines may require root level privileges (script will provide warnings)\n\n". " Some routines may require root level privileges (script will provide warnings)\n\n".
" Output Options:\n". " Performance and Reporting Options\n".
" --nogood Remove OK responses\n". " --skipsize Don't enumerate tables and their types/sizes\n".
" --nobad Remove negative/suggestion responses\n". " (Recommended for servers with many tables)\n\n".
" --noinfo Remove informational responses\n". " Output Options:\n".
" --nocolor Don't print output in color\n". " --nogood Remove OK responses\n".
" --nobad Remove negative/suggestion responses\n".
" --noinfo Remove informational responses\n".
" --nocolor Don't print output in color\n".
"\n"; "\n";
exit; exit;
} }
@ -277,6 +282,11 @@ sub check_architecture {
# Start up a ton of storage engine counts/statistics # Start up a ton of storage engine counts/statistics
my (%enginestats,%enginecount); my (%enginestats,%enginecount);
sub check_storage_engines { sub check_storage_engines {
if ($opt{skipsize} eq 1) {
print "\n-------- Storage Engine Statistics -------------------------------------------\n";
infoprint "Skipped due to --skipsize option\n";
return;
}
print "\n-------- Storage Engine Statistics -------------------------------------------\n"; print "\n-------- Storage Engine Statistics -------------------------------------------\n";
infoprint "Status: "; infoprint "Status: ";
my $engines; my $engines;
@ -287,32 +297,44 @@ sub check_storage_engines {
$engines .= (defined $myvar{'have_isam'} && $myvar{'have_isam'} eq "YES")? greenwrap "+ISAM " : redwrap "-ISAM " ; $engines .= (defined $myvar{'have_isam'} && $myvar{'have_isam'} eq "YES")? greenwrap "+ISAM " : redwrap "-ISAM " ;
$engines .= (defined $myvar{'have_ndbcluster'} && $myvar{'have_ndbcluster'} eq "YES")? greenwrap "+NDBCluster " : redwrap "-NDBCluster " ; $engines .= (defined $myvar{'have_ndbcluster'} && $myvar{'have_ndbcluster'} eq "YES")? greenwrap "+NDBCluster " : redwrap "-NDBCluster " ;
print "$engines\n"; print "$engines\n";
my @tblist; if ($mysqlvermajor eq 5) {
# Now we build a database list, and loop through it to get storage engine stats for tables # MySQL 5 servers can have table sizes calculated quickly from information schema
my @dblist = `mysql $mysqllogin -Bse "SHOW DATABASES"`; 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;"`;
foreach my $db (@dblist) { foreach my $line (@templist) {
chomp($db); my ($engine,$size,$count);
if ($db eq "information_schema") { next; } ($engine,$size,$count) = $line =~ /([a-zA-Z_]*)\s+(\d+)\s+(\d+)/;
if ($mysqlvermajor == 3 || ($mysqlvermajor == 4 && $mysqlverminor == 0)) {
# MySQL 3.23/4.0 keeps Data_Length in the 6th column
push (@tblist,`mysql $mysqllogin -Bse "SHOW TABLE STATUS FROM \\\`$db\\\`" | awk '{print \$2,\$6}'`);
} else {
# MySQL 4.1+ keeps Data_Length in the 7th column
push (@tblist,`mysql $mysqllogin -Bse "SHOW TABLE STATUS FROM \\\`$db\\\`" | awk '{print \$2,\$7}'`);
}
}
# Parse through the table list to generate storage engine counts/statistics
foreach my $line (@tblist) {
$line =~ /([a-zA-Z_]*)\s*(.*)/;
my $engine = $1;
my $size = $2;
if ($size !~ /^\d+$/) { $size = 0; }
if (defined $enginestats{$engine}) {
$enginestats{$engine} += $size;
$enginecount{$engine} += 1;
} else {
$enginestats{$engine} = $size; $enginestats{$engine} = $size;
$enginecount{$engine} = 1; $enginecount{$engine} = $count;
}
} else {
# MySQL < 5 servers take a lot of work to get table sizes
my @tblist;
# Now we build a database list, and loop through it to get storage engine stats for tables
my @dblist = `mysql $mysqllogin -Bse "SHOW DATABASES"`;
foreach my $db (@dblist) {
chomp($db);
if ($db eq "information_schema") { next; }
if ($mysqlvermajor == 3 || ($mysqlvermajor == 4 && $mysqlverminor == 0)) {
# MySQL 3.23/4.0 keeps Data_Length in the 6th column
push (@tblist,`mysql $mysqllogin -Bse "SHOW TABLE STATUS FROM \\\`$db\\\`" | awk '{print \$2,\$6}'`);
} else {
# MySQL 4.1+ keeps Data_Length in the 7th column
push (@tblist,`mysql $mysqllogin -Bse "SHOW TABLE STATUS FROM \\\`$db\\\`" | awk '{print \$2,\$7}'`);
}
}
# Parse through the table list to generate storage engine counts/statistics
foreach my $line (@tblist) {
$line =~ /([a-zA-Z_]*)\s+(.*)/;
my $engine = $1;
my $size = $2;
if ($size !~ /^\d+$/) { $size = 0; }
if (defined $enginestats{$engine}) {
$enginestats{$engine} += $size;
$enginecount{$engine} += 1;
} else {
$enginestats{$engine} = $size;
$enginecount{$engine} = 1;
}
} }
} }
while (my ($engine,$size) = each(%enginestats)) { while (my ($engine,$size) = each(%enginestats)) {
@ -538,7 +560,7 @@ sub mysql_stats {
} else { } else {
if ($mycalc{'query_cache_efficiency'} < 20) { if ($mycalc{'query_cache_efficiency'} < 20) {
badprint "Query cache efficiency: $mycalc{'query_cache_efficiency'}%\n"; badprint "Query cache efficiency: $mycalc{'query_cache_efficiency'}%\n";
push(@adjvars,"query_cache_limit (> 1M, or use smaller result sets)"); push(@adjvars,"query_cache_limit (> ".hr_bytes_rnd($myvar{'query_cache_limit'}).", or use smaller result sets)");
} else { } else {
goodprint "Query cache efficiency: $mycalc{'query_cache_efficiency'}%\n"; goodprint "Query cache efficiency: $mycalc{'query_cache_efficiency'}%\n";
} }
@ -578,7 +600,7 @@ sub mysql_stats {
badprint "Temporary tables created on disk: $mycalc{'pct_temp_disk'}%\n"; badprint "Temporary tables created on disk: $mycalc{'pct_temp_disk'}%\n";
push(@adjvars,"tmp_table_size (> ".hr_bytes_rnd($myvar{'tmp_table_size'}).")"); push(@adjvars,"tmp_table_size (> ".hr_bytes_rnd($myvar{'tmp_table_size'}).")");
push(@adjvars,"max_heap_table_size (> ".hr_bytes_rnd($myvar{'max_heap_table_size'}).")"); push(@adjvars,"max_heap_table_size (> ".hr_bytes_rnd($myvar{'max_heap_table_size'}).")");
push(@generalrec,"Be sure that tmp_table_size/max_heap_table_size are equal"); push(@generalrec,"When making adjustments, make tmp_table_size/max_heap_table_size equal");
push(@generalrec,"Reduce your SELECT DISTINCT queries without LIMIT clauses"); push(@generalrec,"Reduce your SELECT DISTINCT queries without LIMIT clauses");
} elsif ($mycalc{'pct_temp_disk'} > 25 && $mycalc{'max_tmp_table_size'} >= 256) { } elsif ($mycalc{'pct_temp_disk'} > 25 && $mycalc{'max_tmp_table_size'} >= 256) {
badprint "Temporary tables created on disk: $mycalc{'pct_temp_disk'}%\n"; badprint "Temporary tables created on disk: $mycalc{'pct_temp_disk'}%\n";