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Newer versions of mysql ignore innodb_log_file_size, recommend innodb_redo_log_capacity instead.

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#657
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Jean-Marie Renouard 2023-06-21 23:40:09 +02:00
parent 5ccb6f9cd6
commit 26676127ce
1 changed files with 60 additions and 33 deletions
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93
mysqltuner.pl
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@ -1,5 +1,5 @@
#!/usr/bin/env perl #!/usr/bin/env perl
# mysqltuner.pl - Version 2.1.7 # mysqltuner.pl - Version 2.1.8
# High Performance MySQL Tuning Script # High Performance MySQL Tuning Script
# Copyright (C) 2006-2023 Major Hayden - major@mhtx.net # Copyright (C) 2006-2023 Major Hayden - major@mhtx.net
# Copyright (C) 2015-2023 Jean-Marie Renouard - jmrenouard@gmail.com # Copyright (C) 2015-2023 Jean-Marie Renouard - jmrenouard@gmail.com
@ -57,7 +57,7 @@ use Cwd 'abs_path';
#use Env; #use Env;
# Set up a few variables for use in the script # Set up a few variables for use in the script
my $tunerversion = "2.1.7"; my $tunerversion = "2.1.8";
my ( @adjvars, @generalrec ); my ( @adjvars, @generalrec );
# Set defaults # Set defaults
@ -6039,22 +6039,27 @@ sub mysql_innodb {
if ( defined $myvar{'innodb_redo_log_capacity'} ) { if ( defined $myvar{'innodb_redo_log_capacity'} ) {
infoprint " +-- InnoDB Redo Log Capacity: " infoprint " +-- InnoDB Redo Log Capacity: "
. hr_bytes( $myvar{'innodb_redo_log_capacity'} ); . hr_bytes( $myvar{'innodb_redo_log_capacity'} );
} } else {
if ( defined $myvar{'innodb_log_file_size'} ) { if ( defined $myvar{'innodb_log_file_size'} ) {
infoprint " +-- InnoDB Log File Size: " infoprint " +-- InnoDB Log File Size: "
. hr_bytes( $myvar{'innodb_log_file_size'} ); . hr_bytes( $myvar{'innodb_log_file_size'} );
} }
if ( defined $myvar{'innodb_log_files_in_group'} ) { if ( defined $myvar{'innodb_log_files_in_group'} ) {
infoprint " +-- InnoDB Log File In Group: " infoprint " +-- InnoDB Log File In Group: "
. $myvar{'innodb_log_files_in_group'}; . $myvar{'innodb_log_files_in_group'};
} infoprint " +-- InnoDB Total Log File Size: "
if ( defined $myvar{'innodb_log_files_in_group'} ) { . hr_bytes( $myvar{'innodb_log_files_in_group'} *
$myvar{'innodb_log_file_size'} )
. "("
. $mycalc{'innodb_log_size_pct'}
. " % of buffer pool)";
} else {
infoprint " +-- InnoDB Total Log File Size: " infoprint " +-- InnoDB Total Log File Size: "
. hr_bytes( $myvar{'innodb_log_files_in_group'} * . hr_bytes( $myvar{'innodb_log_file_size'} )
$myvar{'innodb_log_file_size'} ) . "("
. "(" . $mycalc{'innodb_log_size_pct'}
. $mycalc{'innodb_log_size_pct'} . " % of buffer pool)";
. " % of buffer pool)"; }
} }
if ( defined $myvar{'innodb_log_buffer_size'} ) { if ( defined $myvar{'innodb_log_buffer_size'} ) {
infoprint " +-- InnoDB Log Buffer: " infoprint " +-- InnoDB Log Buffer: "
@ -6069,6 +6074,7 @@ sub mysql_innodb {
. hr_bytes( $mystat{'Innodb_buffer_pool_pages_total'} ) . ""; . hr_bytes( $mystat{'Innodb_buffer_pool_pages_total'} ) . "";
} }
} }
if ( defined $myvar{'innodb_thread_concurrency'} ) { if ( defined $myvar{'innodb_thread_concurrency'} ) {
infoprint "InnoDB Thread Concurrency: " infoprint "InnoDB Thread Concurrency: "
. $myvar{'innodb_thread_concurrency'}; . $myvar{'innodb_thread_concurrency'};
@ -6077,8 +6083,7 @@ sub mysql_innodb {
# InnoDB Buffer Pool Size # InnoDB Buffer Pool Size
if ( $myvar{'innodb_file_per_table'} eq "ON" ) { if ( $myvar{'innodb_file_per_table'} eq "ON" ) {
goodprint "InnoDB File per table is activated"; goodprint "InnoDB File per table is activated";
} } else {
else {
badprint "InnoDB File per table is not activated"; badprint "InnoDB File per table is not activated";
push( @adjvars, "innodb_file_per_table=ON" ); push( @adjvars, "innodb_file_per_table=ON" );
} }
@ -6088,8 +6093,7 @@ sub mysql_innodb {
goodprint "InnoDB buffer pool / data size: " goodprint "InnoDB buffer pool / data size: "
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . " / " . hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . " / "
. hr_bytes( $enginestats{'InnoDB'} ) . ""; . hr_bytes( $enginestats{'InnoDB'} ) . "";
} } else {
else {
badprint "InnoDB buffer pool / data size: " badprint "InnoDB buffer pool / data size: "
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . " / " . hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . " / "
. hr_bytes( $enginestats{'InnoDB'} ) . ""; . hr_bytes( $enginestats{'InnoDB'} ) . "";
@ -6100,14 +6104,29 @@ sub mysql_innodb {
} }
if ( $mycalc{'innodb_log_size_pct'} < 20 if ( $mycalc{'innodb_log_size_pct'} < 20
or $mycalc{'innodb_log_size_pct'} > 30 ) or $mycalc{'innodb_log_size_pct'} > 30 )
{ {
badprint "Ratio InnoDB log file size / InnoDB Buffer pool size (" if ( defined $myvar{'innodb_redo_log_capacity'} ) {
badprint "Ratio InnoDB redo log capacity / InnoDB Buffer pool size ("
. $mycalc{'innodb_log_size_pct'} . "%): "
. hr_bytes( $myvar{'innodb_redo_log_capacity'} ) . " / "
. hr_bytes( $myvar{'innodb_buffer_pool_size'} )
. " should be equal to 25%";
push(
@adjvars,
"innodb_redo_log_capacity should be (="
. hr_bytes_rnd(
$myvar{'innodb_buffer_pool_size'} / 4
)
. ") if possible, so InnoDB Redo log Capacity equals 25% of buffer pool size."
);
} else {
badprint "Ratio InnoDB log file size / InnoDB Buffer pool size ("
. $mycalc{'innodb_log_size_pct'} . "%): " . $mycalc{'innodb_log_size_pct'} . "%): "
. hr_bytes( $myvar{'innodb_log_file_size'} ) . " * " . hr_bytes( $myvar{'innodb_log_file_size'} ) . " * "
. $myvar{'innodb_log_files_in_group'} . " / " . $myvar{'innodb_log_files_in_group'} . " / "
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . hr_bytes( $myvar{'innodb_buffer_pool_size'} )
. " should be equal to 25%"; . " should be equal to 25%";
push( push(
@adjvars, @adjvars,
"innodb_log_file_size should be (=" "innodb_log_file_size should be (="
. hr_bytes_rnd( . hr_bytes_rnd(
@ -6115,22 +6134,30 @@ sub mysql_innodb {
$myvar{'innodb_log_files_in_group'} / 4 $myvar{'innodb_log_files_in_group'} / 4
) )
. ") if possible, so InnoDB total log file size equals 25% of buffer pool size." . ") if possible, so InnoDB total log file size equals 25% of buffer pool size."
); );
if ( mysql_version_le( 5, 6, 2 ) ) { }
if ( mysql_version_le( 5, 6, 2 ) ) {
push( @generalrec, push( @generalrec,
"For MySQL 5.6.2 and lower, total innodb_log_file_size should have a ceiling of (4096MB / log files in group) - 1MB." "For MySQL 5.6.2 and lower, total innodb_log_file_size should have a ceiling of (4096MB / log files in group) - 1MB."
); );
} }
push( @generalrec,
"Before changing innodb_log_file_size and/or innodb_log_files_in_group read this: https://bit.ly/2TcGgtU" } else {
); if ( defined $myvar{'innodb_redo_log_capacity'} ) {
} goodprint "Ratio InnoDB Redo Log Capacity / InnoDB Buffer pool size: "
else { . hr_bytes( $myvar{'innodb_redo_log_capacity'} ) . "/"
goodprint "Ratio InnoDB log file size / InnoDB Buffer pool size: " . hr_bytes( $myvar{'innodb_buffer_pool_size'} )
. " should be equal to 25%";
} else {
push( @generalrec,
"Before changing innodb_log_file_size and/or innodb_log_files_in_group read this: https://bit.ly/2TcGgtU"
);
goodprint "Ratio InnoDB log file size / InnoDB Buffer pool size: "
. hr_bytes( $myvar{'innodb_log_file_size'} ) . " * " . hr_bytes( $myvar{'innodb_log_file_size'} ) . " * "
. $myvar{'innodb_log_files_in_group'} . "/" . $myvar{'innodb_log_files_in_group'} . "/"
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . hr_bytes( $myvar{'innodb_buffer_pool_size'} )
. " should be equal to 25%"; . " should be equal to 25%";
}
} }
# InnoDB Buffer Pool Instances (MySQL 5.6.6+) # InnoDB Buffer Pool Instances (MySQL 5.6.6+)
@ -7070,7 +7097,7 @@ __END__
=head1 NAME =head1 NAME
MySQLTuner 2.1.7 - MySQL High Performance Tuning Script MySQLTuner 2.1.8 - MySQL High Performance Tuning Script
=head1 IMPORTANT USAGE GUIDELINES =head1 IMPORTANT USAGE GUIDELINES