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* Get correct physical memory on FreeBSD

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* Make all swap memory results in bytes
* Get swap memory on Solaris
* Include what physical memory is in output
* If mysql version >=5.1, tell user its table_open_cache.
This commit is contained in:
The Dreamer 2013-05-19 12:52:44 -05:00
parent 71f14ea053
commit d60062c13f
1 changed files with 18 additions and 9 deletions
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27
mysqltuner.pl
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@ -1,5 +1,5 @@
#!/usr/bin/perl -w #!/usr/bin/perl -w
# mysqltuner.pl - Version 1.2.0 # mysqltuner.pl - Version 1.2.0_LKC
# High Performance MySQL Tuning Script # High Performance MySQL Tuning Script
# Copyright (C) 2006-2011 Major Hayden - major@mhtx.net # Copyright (C) 2006-2011 Major Hayden - major@mhtx.net
# #
@ -41,7 +41,7 @@ use File::Spec;
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 = "1.2.0"; my $tunerversion = "1.2.0_LKC";
my (@adjvars, @generalrec); my (@adjvars, @generalrec);
# Set defaults # Set defaults
@ -219,19 +219,24 @@ sub os_setup {
} elsif ($os =~ /Darwin/) { } elsif ($os =~ /Darwin/) {
$physical_memory = `sysctl -n hw.memsize` or memerror; $physical_memory = `sysctl -n hw.memsize` or memerror;
$swap_memory = `sysctl -n vm.swapusage | awk '{print \$3}' | sed 's/\..*\$//'` or memerror; $swap_memory = `sysctl -n vm.swapusage | awk '{print \$3}' | sed 's/\..*\$//'` or memerror;
} elsif ($os =~ /NetBSD|OpenBSD/) { $swap_memory = $swap_memory*1024*1024;
} elsif ($os =~ /NetBSD|OpenBSD|FreeBSD/) {
$physical_memory = `sysctl -n hw.physmem` or memerror; $physical_memory = `sysctl -n hw.physmem` or memerror;
if ($physical_memory < 0) { if ($physical_memory < 0) {
$physical_memory = `sysctl -n hw.physmem64` or memerror; $physical_memory = `sysctl -n hw.physmem64` or memerror;
} }
$swap_memory = `swapctl -l | grep '^/' | awk '{ s+= \$2 } END { print s }'` or memerror; $swap_memory = `swapctl -l | grep '^/' | awk '{ s+= \$2 } END { print s }'` or memerror;
$swap_memory = $swap_memory*1024;
} elsif ($os =~ /BSD/) { } elsif ($os =~ /BSD/) {
$physical_memory = `sysctl -n hw.realmem`; $physical_memory = `sysctl -n hw.realmem` or memerror;
$swap_memory = `swapinfo | grep '^/' | awk '{ s+= \$2 } END { print s }'`; $swap_memory = `swapinfo | grep '^/' | awk '{ s+= \$2 } END { print s }'`;
$swap_memory = $swap_memory*1024;
} elsif ($os =~ /SunOS/) { } elsif ($os =~ /SunOS/) {
$physical_memory = `/usr/sbin/prtconf | grep Memory | cut -f 3 -d ' '` or memerror; $physical_memory = `/usr/sbin/prtconf | grep Memory | cut -f 3 -d ' '` or memerror;
chomp($physical_memory); chomp($physical_memory);
$physical_memory = $physical_memory*1024*1024; $physical_memory = $physical_memory*1024*1024;
$swap_memory = `swap -l | grep '^/' | awk '{ s+= \$4 } END { print s }'`;
$swap_memory = $swap_memory*512;
} elsif ($os =~ /AIX/) { } elsif ($os =~ /AIX/) {
$physical_memory = `lsattr -El sys0 | grep realmem | awk '{print \$2}'` or memerror; $physical_memory = `lsattr -El sys0 | grep realmem | awk '{print \$2}'` or memerror;
chomp($physical_memory); chomp($physical_memory);
@ -719,12 +724,12 @@ sub mysql_stats {
infoprint "Total buffers: ".hr_bytes($mycalc{'server_buffers'})." global + ".hr_bytes($mycalc{'per_thread_buffers'})." per thread ($myvar{'max_connections'} max threads)\n"; infoprint "Total buffers: ".hr_bytes($mycalc{'server_buffers'})." global + ".hr_bytes($mycalc{'per_thread_buffers'})." per thread ($myvar{'max_connections'} max threads)\n";
if ($mycalc{'total_possible_used_memory'} > 2*1024*1024*1024 && $arch eq 32) { if ($mycalc{'total_possible_used_memory'} > 2*1024*1024*1024 && $arch eq 32) {
badprint "Allocating > 2GB RAM on 32-bit systems can cause system instability\n"; badprint "Allocating > 2GB RAM on 32-bit systems can cause system instability\n";
badprint "Maximum possible memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n"; badprint "Maximum possible memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM - ".hr_bytes($physical_memory).")\n";
} elsif ($mycalc{'pct_physical_memory'} > 85) { } elsif ($mycalc{'pct_physical_memory'} > 85) {
badprint "Maximum possible memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n"; badprint "Maximum possible memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM - ".hr_bytes($physical_memory).")\n";
push(@generalrec,"Reduce your overall MySQL memory footprint for system stability"); push(@generalrec,"Reduce your overall MySQL memory footprint for system stability");
} else { } else {
goodprint "Maximum possible memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n"; goodprint "Maximum possible memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM - ".hr_bytes($physical_memory).")\n";
} }
# Slow queries # Slow queries
@ -863,11 +868,12 @@ sub mysql_stats {
if ($mycalc{'table_cache_hit_rate'} < 20) { if ($mycalc{'table_cache_hit_rate'} < 20) {
badprint "Table cache hit rate: $mycalc{'table_cache_hit_rate'}% (".hr_num($mystat{'Open_tables'})." open / ".hr_num($mystat{'Opened_tables'})." opened)\n"; badprint "Table cache hit rate: $mycalc{'table_cache_hit_rate'}% (".hr_num($mystat{'Open_tables'})." open / ".hr_num($mystat{'Opened_tables'})." opened)\n";
if (mysql_version_ge(5, 1)) { if (mysql_version_ge(5, 1)) {
push(@adjvars,"table_cache (> ".$myvar{'table_open_cache'}.")"); push(@adjvars,"table_open_cache (> ".$myvar{'table_open_cache'}.")");
push(@generalrec,"Increase table_open_cache gradually to avoid file descriptor limits");
} else { } else {
push(@adjvars,"table_cache (> ".$myvar{'table_cache'}.")"); push(@adjvars,"table_cache (> ".$myvar{'table_cache'}.")");
}
push(@generalrec,"Increase table_cache gradually to avoid file descriptor limits"); push(@generalrec,"Increase table_cache gradually to avoid file descriptor limits");
}
} else { } else {
goodprint "Table cache hit rate: $mycalc{'table_cache_hit_rate'}% (".hr_num($mystat{'Open_tables'})." open / ".hr_num($mystat{'Opened_tables'})." opened)\n"; goodprint "Table cache hit rate: $mycalc{'table_cache_hit_rate'}% (".hr_num($mystat{'Open_tables'})." open / ".hr_num($mystat{'Opened_tables'})." opened)\n";
} }
@ -950,6 +956,9 @@ get_all_vars; # Toss variables/status into hashes
validate_tuner_version; # Check current MySQLTuner version validate_tuner_version; # Check current MySQLTuner version
validate_mysql_version; # Check current MySQL version validate_mysql_version; # Check current MySQL version
check_architecture; # Suggest 64-bit upgrade check_architecture; # Suggest 64-bit upgrade
infoprint "Physical Memory - ".hr_bytes($physical_memory)." Swap Memory - ".hr_bytes($swap_memory)."\n";
check_storage_engines; # Show enabled storage engines check_storage_engines; # Show enabled storage engines
security_recommendations; # Display some security recommendations security_recommendations; # Display some security recommendations
calculations; # Calculate everything we need calculations; # Calculate everything we need