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System: Settings: Tunables - change zfs transcation group defaults. (timeout from 5 --> 90 seconds, dirty data sync percentage from 20 --> 5)

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Usually firewalls are not processing a lot of disk write operations, in which case a forced every 5 second flush will lead to quite some wear on the underlying storage device (usually a solid state one these days).
Roughly 20GB per day is being written when using the upstream defaults and without much actual load. To compensate a bit for the reduction of forced syncs, we lower the threshold on the dirty data.
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Ad Schellevis 2024-01-10 11:36:02 +01:00
parent b339f21817
commit d766ae211c
1 changed files with 2 additions and 0 deletions
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src/etc/inc/system.inc
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@ -122,6 +122,8 @@ function system_sysctl_defaults()
'security.bsd.see_other_gids' => [ 'default' => '0' ],
'security.bsd.see_other_uids' => [ 'default' => '0' ],
'vfs.read_max' => [ 'default' => '32' ],
'vfs.zfs.txg.timeout' => [ 'default' => '90' ],
'vfs.zfs.dirty_data_sync_percent' => [ 'default' => '5' ],
'vm.pmap.pti' => [ 'default' => '1' ],
];
}