| From: | Rajesh Kumar Mallah <mallah(dot)rajesh(at)gmail(dot)com> |
|---|---|
| To: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | Yeb Havinga <yebhavinga(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: sudden spurt in swap utilization (was:cpu bound postgresql setup.) |
| Date: | 2010-06-25 15:59:21 |
| Message-ID: | AANLkTikJEyqi_8WRI6FjH3OBnnIj4SV9EbTBLl2EGCZw@mail.gmail.com |
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| Lists: | pgsql-performance |
Dear List,
pgtune suggests the following:
(current value are in braces via reason) , (*) indicates significant
difference from current value.
default_statistics_target = 50 # pgtune wizard 2010-06-25 (current 100
via default)
(*) maintenance_work_mem = 1GB # pgtune wizard 2010-06-25 (16MB via default)
checkpoint_completion_target = 0.9 # pgtune wizard 2010-06-25 (0.5 via
default)
(*) effective_cache_size = 22GB # pgtune wizard 2010-06-25 (18GB ,
specified)
work_mem = 192MB # pgtune wizard 2010-06-25 (256MB , specified)
(*) wal_buffers = 8MB # pgtune wizard 2010-06-25 ( 64kb , via default)
checkpoint_segments = 16 # pgtune wizard 2010-06-25 (30 , specified)
shared_buffers = 7680MB # pgtune wizard 2010-06-25 ( 4096 MB ,
specified)
(*) max_connections = 80 # pgtune wizard 2010-06-25 ( 300 , ;-) specified )
when i reduce max_connections i start getting errors, i will see again
concurrent connections
during business hours. lot of our connections are in <IDLE in transaction
state> during business
this peculiar behavior of mod_perl servers have been discussed in past i
think. dont' remember
if there was any resolution.
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