max_fsm_pages and check_points

From: ALVARO ARCILA <arcila_alvaro(at)hotmail(dot)com>
To: <pgsql-performance(at)postgresql(dot)org>
Subject: max_fsm_pages and check_points
Date: 2006-12-20 05:31:21
Message-ID: BAY121-W16DAEF170C0B7B617356B083CF0@phx.gbl
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HI,

I've looking around the log files of my server and lately they indicate that I should consider increase the check_point segments because they're beeing reading too often and also recommend increasing the max_fsm_pages over 169728...

those are the config values present in the postgresql.conf

shared_buffers = 1000 # min 16 or max_connections*2, 8KB eachwork_mem = 8192 # min 64, size in KBmaintenance_work_mem = 262152 # min 1024, size in KBmax_fsm_pages = 40000 # min max_fsm_relations*16, 6 bytes eachmax_fsm_relations = 2000 # min 100, ~70 bytes each


And the new values, acording to the HNIT in log files ...

shared_buffers = 1000 # min 16 or max_connections*2, 8KB eachwork_mem = 8192 # min 64, size in KBmaintenance_work_mem = 262152 # min 1024, size in KBmax_fsm_pages = 170000 # min max_fsm_relations*16, 6 bytes eachmax_fsm_relations = 10625 # min 100, ~70 bytes each



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