the eternal tunnig question

From: mmiranda(at)americatel(dot)com(dot)sv
To: pgsql-general(at)postgresql(dot)org
Subject: the eternal tunnig question
Date: 2005-04-30 01:20:19
Message-ID: 76E0DAA32C39D711B6EC0002B364A6FA0445C429@amsal01exc01.americatel.com.sv
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Hi, iam running postgresql on two identical dl380 2.4 Xeon with 3gb RAM, i
have recently upgraded one of then from redhat 7.3 (kernel 2.4) to gentoo
(kernel 2.6), at the same time i upgraded postgres from 7.3 to 8.1, im very
disapointed, all the querys are 20-25% slower using the new versions, the
following setting are the same in postgresql.conf

shared_buffers = 10240
work_mem = 5120
max_fsm_pages = 170000
max_fsm_relations = 10000

i havent touched anything else.
However i see a lot of new setting in PG8, is there a online manual for
tunnig these new settings?, may be a need some fine setting here and there.

thanks

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