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#258 new rule for innodb log file size (25% of Buffer pool size)

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root 2016-10-18 14:25:02 +02:00
parent cff9e62933
commit bbc04d848f
1 changed files with 22 additions and 64 deletions
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mysqltuner.pl
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@ -3958,65 +3958,6 @@ sub mysqsl_pfs {
}
infoprint "No information found or indicators desactivated." if ($nbL == 1);
return;
##
##################################################################################
#statements_with_sorting
#mysql> desc statements_with_sorting;
#+-------------------+---------------------+------+-----+---------------------+-------+
#| Field | Type | Null | Key | Default | Extra |
#+-------------------+---------------------+------+-----+---------------------+-------+
#| query | longtext | YES | | NULL | |
#| db | varchar(64) | YES | | NULL | |
#| exec_count | bigint(20) unsigned | NO | | NULL | |
#| total_latency | text | YES | | NULL | |
#| sort_merge_passes | bigint(20) unsigned | NO | | NULL | |
#| avg_sort_merges | decimal(21,0) | NO | | 0 | |
#| sorts_using_scans | bigint(20) unsigned | NO | | NULL | |
#| sort_using_range | bigint(20) unsigned | NO | | NULL | |
#| rows_sorted | bigint(20) unsigned | NO | | NULL | |
#| avg_rows_sorted | decimal(21,0) | NO | | 0 | |
#| first_seen | timestamp | NO | | 0000-00-00 00:00:00 | |
#| last_seen | timestamp | NO | | 0000-00-00 00:00:00 | |
#| digest | varchar(32) | YES | | NULL | |
#+-------------------+---------------------+------+-----+---------------------+-------+
#13 rows in set (0,00 sec)
return;
subheaderprint "Performance schema: TOP 15 most row look queries (95% percentile)";
$nbL=1;
for my $lQuery(select_array ('use sys;select db, query, rows_examined AS search from statements_with_runtimes_in_95th_percentile ORDER BY rows_examined DESC LIMIT 15;')) {
infoprint " +-- $nbL: $lQuery";
$nbL++;
}
infoprint "No information found or indicators desactivated." if ($nbL == 1);
subheaderprint "Performance schema: TOP 15 max latency queries (95% percentile)";
$nbL=1;
for my $lQuery(select_array ('use sys;select db, query, max_latency AS search from statements_with_runtimes_in_95th_percentile ORDER BY max_latency DESC LIMIT 15;')) {
infoprint " +-- $nbL: $lQuery";
$nbL++;
}
infoprint "No information found or indicators desactivated." if ($nbL == 1);
subheaderprint "Performance schema: TOP 15 average latency queries (95% percentile)";
$nbL=1;
for my $lQuery(select_array ('use sys;select db, query, avg_latency AS search from statements_with_runtimes_in_95th_percentile ORDER BY avg_latency DESC LIMIT 15;')) {
infoprint " +-- $nbL: $lQuery";
$nbL++;
}
infoprint "No information found or indicators desactivated." if ($nbL == 1);
subheaderprint "Performance schema: XXXXXXX";
$nbL=1;
for my $lQuery(select_array ('select "none";')) {
infoprint " +-- $nbL: $lQuery";
$nbL++;
}
infoprint "No information found or indicators desactivated." if ($nbL == 1);
return;
##################################################################################
@ -4692,9 +4633,14 @@ sub mysql_innodb {
infoprint " +-- InnoDB Additional Mem Pool: "
. hr_bytes( $myvar{'innodb_additional_mem_pool_size'} ) . "";
}
if ( defined $myvar{'innodb_log_file_size'} ) {
infoprint " +-- InnoDB Log File Size: "
. hr_bytes( $myvar{'innodb_log_file_size'} ) . "(".$mycalc{'innodb_log_size_pct'}." % of buffer pool)";
}
if ( defined $myvar{'innodb_log_buffer_size'} ) {
infoprint " +-- InnoDB Log Buffer: "
. hr_bytes( $myvar{'innodb_log_buffer_size'} ) . "(".percentage($mycalc{'innodb_log_size_pct'}).")";
. hr_bytes( $myvar{'innodb_log_buffer_size'} ) ;
}
if ( defined $mystat{'Innodb_buffer_pool_pages_free'} ) {
infoprint " +-- InnoDB Log Buffer Free: "
@ -4721,7 +4667,19 @@ sub mysql_innodb {
. hr_bytes_rnd( $enginestats{'InnoDB'} )
. ") if possible." );
}
if ($mycalc{'innodb_log_size_pct'} < 20 or $mycalc{'innodb_log_size_pct'} > 30) {
badprint "Ratio InnoDB log file size / InnoDb Buffer pool size (".
$mycalc{'innodb_log_size_pct'}.
" %): " . hr_bytes( $myvar{'innodb_log_file_size'} ) . "/"
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . " should be equal 25%";
push( @adjvars,
"innodb_log_file_size should be equals to 1/4 of buffer pool size (= "
. hr_bytes_rnd( $myvar{'innodb_buffer_pool_size'}/4 ) . ") if possible." );
} else {
goodprint "InnoDB log file size / InnoDb Buffer pool size: "
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . "/"
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . " should be equal 25%";
}
# InnoDB Buffer Pull Instances (MySQL 5.6.6+)
if ( defined( $myvar{'innodb_buffer_pool_instances'} ) ) {
@ -4763,7 +4721,7 @@ sub mysql_innodb {
else {
if ( $myvar{'innodb_buffer_pool_instances'} != 1 ) {
badprint
"InnoDB buffer pool <= 1G and innodb_buffer_pool_instances(!=1).";
"InnoDB buffer pool <= 1G and Innodb_buffer_pool_instances(!=1).";
push( @adjvars, "innodb_buffer_pool_instances (=1)" );
}
else {
@ -4793,11 +4751,11 @@ sub mysql_innodb {
)
{
goodprint
"innodb_buffer_pool_size is aligned with value innodb_buffer_pool_chunk_size and innodb_buffer_pool_instances";
"Innodb_buffer_pool_size aligned with Innodb_buffer_pool_chunk_size & Innodb_buffer_pool_instances";
}
else {
badprint
"innodb_buffer_pool_size is not aligned with value innodb_buffer_pool_chunk_size and innodb_buffer_pool_instances";
"Innodb_buffer_pool_size aligned with Innodb_buffer_pool_chunk_size & Innodb_buffer_pool_instances";
#push( @adjvars, "Adjust innodb_buffer_pool_instances, innodb_buffer_pool_chunk_size with innodb_buffer_pool_size" );
push( @adjvars,