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postgres: Tune effective_cache_size upwards, to 75%.

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The previous 10/16ths is an odd value; various suggestions are around
75% of RAM, and in practice this is closer to what is observed.
This commit is contained in:
Alex Vandiver
2025-05-09 19:08:54 -04:00
committed by Tim Abbott
parent 49c307e136
commit 8850c3f85c
1 changed files with 1 additions and 1 deletions
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2
puppet/zulip/manifests/profile/postgresql.pp
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@@ -12,7 +12,7 @@ class zulip::profile::postgresql {
} }
$work_mem = zulipconf('postgresql', 'work_mem', sprintf('%dMB', $total_postgres_memory_mb / 256)) $work_mem = zulipconf('postgresql', 'work_mem', sprintf('%dMB', $total_postgres_memory_mb / 256))
$shared_buffers = zulipconf('postgresql', 'shared_buffers', sprintf('%dMB', $total_postgres_memory_mb / 4)) $shared_buffers = zulipconf('postgresql', 'shared_buffers', sprintf('%dMB', $total_postgres_memory_mb / 4))
$effective_cache_size = zulipconf('postgresql', 'effective_cache_size', sprintf('%dMB', $total_postgres_memory_mb * 10 / 16)) $effective_cache_size = zulipconf('postgresql', 'effective_cache_size', sprintf('%dMB', $total_postgres_memory_mb * 3 / 4))
$maintenance_work_mem = zulipconf('postgresql', 'maintenance_work_mem', sprintf('%dMB', $total_postgres_memory_mb / 16)) $maintenance_work_mem = zulipconf('postgresql', 'maintenance_work_mem', sprintf('%dMB', $total_postgres_memory_mb / 16))
$wal_buffers = zulipconf('postgresql', 'wal_buffers', undef) $wal_buffers = zulipconf('postgresql', 'wal_buffers', undef)
$random_page_cost = zulipconf('postgresql', 'random_page_cost', undef) $random_page_cost = zulipconf('postgresql', 'random_page_cost', undef)