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Massive changes... output filtering, usage information, and temporary table corrections with regards to max memory calculations

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Major Hayden 2007-06-01 03:26:26 +00:00
parent 89044755e1
commit 4589601af0
1 changed files with 69 additions and 12 deletions
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81
mysqltuner.pl
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@ -2,6 +2,44 @@
use strict;
use warnings;
use diagnostics;
use Getopt::Long;
# Set defaults
my %opt = (
"nobad" => 0,
"nogood" => 0,
"noinfo" => 0,
"notitle" => 0,
);
# Gather the options from the command line
GetOptions(\%opt,
'nobad',
'nogood',
'noinfo',
'notitle',
'help',
);
if (defined $opt{'help'} && $opt{'help'} == 1) { usage(); }
sub usage {
print "\n".
" MySQL High Performance Tuning Script\n".
" Bug reports, feature requests, and downloads at http://mysqltuner.com/\n".
" Maintained by Major Hayden (major.hayden\@rackspace.com)\n\n".
" Important Usage Guidelines:\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".
" Some routines may require root level privileges (script will provide warnings)\n\n".
" Output Options:\n".
" --nogood Remove OK responses\n".
" --nobad Remove negative/suggestion responses\n".
" --noinfo Remove informational responses\n".
" --notitle Remove section title headers\n".
"\n";
exit;
}
# CONFIGURATION ITEMS
my $revision = "1";
@ -10,20 +48,29 @@ my $bad = "[\e[00;31m!!\e[00m]";
my $info = "[\e[00;34m--\e[00m]";
sub goodprint {
if ($opt{nogood} == 1) { return 0; }
my $text = shift;
print $good." ".$text;
}
sub infoprint {
if ($opt{noinfo} == 1) { return 0; }
my $text = shift;
print $info." ".$text;
}
sub badprint {
if ($opt{nobad} == 1) { return 0; }
my $text = shift;
print $bad." ".$text;
}
sub titleprint {
if ($opt{notitle} == 1) { return 0; }
my $text = shift;
print $text;
}
my ($physical_memory,$swap_memory,$duflags);
sub os_setup {
my $os = `uname`;
@ -200,7 +247,7 @@ sub mysql_initial_stats {
}
sub check_memory {
print "------ MEMORY USAGE ------\n";
titleprint "------ MEMORY USAGE ------\n";
# The purpose of this section is to make sure you're not going to end up in swap or crashing the box
# by having buffers that are set too large
#
@ -234,9 +281,17 @@ sub check_memory {
my $key_buffer_size = $myvar{'key_buffer_size'};
# query_cache_size - holds query results (default 0) [still allocated when query_cache_type = 0]
my $query_cache_size = (defined $myvar{'query_cache_size'}) ? $myvar{'query_cache_size'} : 0 ;
# max_heap_table_size / tmp_table_size - hold temporary table data from queries
# ** The effective temporary table size is the smaller number between these two
my $eff_tmp_table_size;
if ($myvar{'tmp_table_size'} > $myvar{'max_heap_table_size'}) {
$eff_tmp_table_size = $myvar{'max_heap_table_size'};
} else {
$eff_tmp_table_size = $myvar{'tmp_table_size'};
}
#
# GLOBAL BUFFER CALCULATIONS:
my $global_buffers = $innodb_buffer_pool_size + $innodb_additional_mem_pool_size + $innodb_log_buffer_size + $key_buffer_size + $query_cache_size;
my $global_buffers = $innodb_buffer_pool_size + $innodb_additional_mem_pool_size + $innodb_log_buffer_size + $key_buffer_size + $query_cache_size + $eff_tmp_table_size;
#
# FINAL BUFFER/MEMORY CALCULATIONS:
my $max_memory = $global_buffers + $max_thread_buffers;
@ -254,10 +309,11 @@ sub check_memory {
goodprint "MySQL is configured to use $pct_physical_memory% (".hr_bytes($total_memory).
") of physical memory (".hr_bytes($physical_memory).")\n";
}
infoprint "This memory total above is when MySQL is at absolute full load\n";
}
sub check_slow_queries {
print "------ SLOW QUERIES ------\n";
titleprint "------ SLOW QUERIES ------\n";
# If the server hasn't received any queries, then we can't calculate a slow query percentage
if ($mystat{'Questions'} > 0) {
my $slowquerypct = int(($mystat{'Slow_queries'}/$mystat{'Questions'}) * 100);
@ -286,7 +342,7 @@ sub check_slow_queries {
}
sub check_connections {
print "------ CONNECTION LIMITS ------\n";
titleprint "------ CONNECTION LIMITS ------\n";
# We're looking at two things here:
# How many connections have been used so far and how close is the connection limit?
# How many connections can overflow into the back_log?
@ -315,7 +371,7 @@ sub check_connections {
}
sub check_key_buffer {
print "------ KEY BUFFER ------\n";
titleprint "------ KEY BUFFER ------\n";
my $myisamindexes;
if ($mysqlvermajor < 5) {
$myisamindexes = `find $myvar{'datadir'} -name '*.MYI' 2>&1 | xargs du $duflags '{}' 2>&1 | awk '{ s += \$1 } END { print s }'`;
@ -375,7 +431,7 @@ sub check_key_buffer {
}
sub check_query_cache {
print "------ QUERY CACHE ------\n";
titleprint "------ QUERY CACHE ------\n";
# If query cache support isn't compiled into MySQL, we fail here
if (!defined $myvar{'have_query_cache'}) {
badprint "Your MySQL server does not support query caching - upgrade MySQL\n";
@ -427,7 +483,7 @@ sub check_query_cache {
}
sub check_sort {
print "------ SORTING ------\n";
titleprint "------ SORTING ------\n";
# SORTING VARIABLES/STATUS:
# read_rnd_buffer_size - sorts are read from this buffer after the sort is complete, helps ORDER BY
# sort_buffer_size - per-thread buffer used for sorting, helps ORDER/GROUP BY
@ -453,7 +509,7 @@ sub check_sort {
}
sub check_join {
print "------ JOINS ------\n";
titleprint "------ JOINS ------\n";
# JOIN VARIABLES/STATUS:
# join_buffer_size - buffer used to join tables when indexes can't be utilized
# Select_full_join - number of joins not using indexes
@ -472,7 +528,7 @@ sub check_join {
}
sub check_temporary_tables {
print "------ TEMPORARY TABLES ------\n";
titleprint "------ TEMPORARY TABLES ------\n";
# TEMPORARY TABLE VARIABLES/STATUS:
# Created_tmp_disk_tables - number of temporary tables created on disk
# Created_tmp_tables - number of temporary tables created in memory
@ -495,14 +551,14 @@ sub check_temporary_tables {
}
sub check_other_buffers {
print "------ OTHER BUFFERS ------\n";
titleprint "------ OTHER BUFFERS ------\n";
# bulk_insert_buffer_size = buffer for large inserts (default: 8M)
infoprint "Your bulk_insert_buffer_size is ".hr_bytes_rnd($myvar{'bulk_insert_buffer_size'}).
" - increase this for large bulk inserts\n";
}
sub performance_options {
print "------ PERFORMANCE OPTIONS ------\n";
titleprint "------ PERFORMANCE OPTIONS ------\n";
# concurrent_insert = enables simultaneous insert/select on MyISAM tables w/o holes
# It's ON/OFF in MySQL 4.1 and 0/1 in MySQL 5.x
if ($myvar{'concurrent_insert'} eq "ON" || $myvar{'concurrent_insert'} > 0) {
@ -515,7 +571,8 @@ sub performance_options {
# ---------------------------------------------------------------------------
# BEGIN 'MAIN'
# ---------------------------------------------------------------------------
infoprint "MySQL High-Performance Tuner - Major Hayden <major.hayden\@rackspace.com>\n";
print " MySQL High-Performance Tuner - Major Hayden <major.hayden\@rackspace.com>\n".
" Bug reports, feature requests, downloads at mysqltuner.com\n";
mysql_install_ok; # Check to see if MySQL is installed
os_setup; # Set up some OS variables
setup_mysql_login; # Gotta login first