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adding more information about sysctl var to setup #656

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This commit is contained in:
Jean-Marie Renouard 2023-06-07 19:05:18 +02:00
parent d7edfad633
commit 343ec024bb
1 changed files with 18 additions and 6 deletions
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24
mysqltuner.pl
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@ -1788,7 +1788,7 @@ sub infocmd_one {
sub get_kernel_info { sub get_kernel_info {
my @params = ( my @params = (
'fs.aio-max-nr', 'fs.aio-nr', 'fs.aio-max-nr', 'fs.aio-nr', 'fs.nr_open'
'fs.file-max', 'sunrpc.tcp_fin_timeout', 'fs.file-max', 'sunrpc.tcp_fin_timeout',
'sunrpc.tcp_max_slot_table_entries', 'sunrpc.tcp_slot_table_entries', 'sunrpc.tcp_max_slot_table_entries', 'sunrpc.tcp_slot_table_entries',
'vm.swappiness' 'vm.swappiness'
@ -1803,7 +1803,7 @@ sub get_kernel_info {
"Swappiness is > 10, please consider having a value lower than 10"; "Swappiness is > 10, please consider having a value lower than 10";
push @generalrec, "setup swappiness lower or equal to 10"; push @generalrec, "setup swappiness lower or equal to 10";
push @adjvars, push @adjvars,
'vm.swappiness <= 10 (echo 10 > /proc/sys/vm/swappiness)'; 'vm.swappiness <= 10 (echo 10 > /proc/sys/vm/swappiness) or vm.swappiness=10 in /etc/sysctl.conf';
} }
else { else {
infoprint "Swappiness is < 10."; infoprint "Swappiness is < 10.";
@ -1819,7 +1819,7 @@ sub get_kernel_info {
"Initial TCP slot entries is < 1M, please consider having a value greater than 100"; "Initial TCP slot entries is < 1M, please consider having a value greater than 100";
push @generalrec, "setup Initial TCP slot entries greater than 100"; push @generalrec, "setup Initial TCP slot entries greater than 100";
push @adjvars, push @adjvars,
'sunrpc.tcp_slot_table_entries > 100 (echo 128 > /proc/sys/sunrpc/tcp_slot_table_entries)'; 'sunrpc.tcp_slot_table_entries > 100 (echo 128 > /proc/sys/sunrpc/tcp_slot_table_entries) or sunrpc.tcp_slot_table_entries=128 in /etc/sysctl.conf';
} }
else { else {
infoprint "TCP slot entries is > 100."; infoprint "TCP slot entries is > 100.";
@ -1828,15 +1828,28 @@ sub get_kernel_info {
if ( -f "/proc/sys/fs/aio-max-nr" ) { if ( -f "/proc/sys/fs/aio-max-nr" ) {
if ( `sysctl -n fs.aio-max-nr` < 1000000 ) { if ( `sysctl -n fs.aio-max-nr` < 1000000 ) {
badprint badprint
"Max running total of the number of events is < 1M, please consider having a value greater than 1M"; "Max running total of the number of max. events is < 1M, please consider having a value greater than 1M";
push @generalrec, "setup Max running number events greater than 1M"; push @generalrec, "setup Max running number events greater than 1M";
push @adjvars, push @adjvars,
'fs.aio-max-nr > 1M (echo 1048576 > /proc/sys/fs/aio-max-nr)'; 'fs.aio-max-nr > 1M (echo 1048576 > /proc/sys/fs/aio-max-nr) or fs.aio-max-nr=1048576 in /etc/sysctl.conf';
} }
else { else {
infoprint "Max Number of AIO events is > 1M."; infoprint "Max Number of AIO events is > 1M.";
} }
} }
fs.nr_open=1048576
if ( -f "/proc/sys/fs/nr_open" ) {
if ( `sysctl -n fs.nr_open` < 1000000 ) {
badprint
"Max running total of the number of file open request is < 1M, please consider having a value greater than 1M";
push @generalrec, "setup running number of open request greater than 1M";
push @adjvars,
'fs.aio-nr > 1M (echo 1048576 > /proc/sys/fs/nr_open) or fs.nr_open=1048576 in /etc/sysctl.conf';
}
else {
infoprint "Max Number of open file requests is > 1M.";
}
}
} }
sub get_system_info { sub get_system_info {
@ -7019,7 +7032,6 @@ __END__
=head1 NAME =head1 NAME
MySQLTuner 2.1.5 - MySQL High Performance Tuning Script MySQLTuner 2.1.5 - MySQL High Performance Tuning Script
MySQLTuner 2.1.5 - MySQL High Performance Tuning Script
=head1 IMPORTANT USAGE GUIDELINES =head1 IMPORTANT USAGE GUIDELINES