Postgres 8.4 memory related parameters

From: Claire Chang <yenhsiac(at)yahoo(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Postgres 8.4 memory related parameters
Date: 2011-08-04 20:27:13
Message-ID: 1312489633.71838.YahooMailClassic@web31912.mail.mud.yahoo.com
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hi, We recently bought a 4 8core 128G memory database server and I am setting it up to replace our old 4 4cores 128G memory database server as a master. The memory related settings that we use on the old machine seem a bit wrong according to the experts on IRC:
max_connections = 600shared_buffers = 32GBeffective_cache_size = 64GBwork_mem = 5MBmaintenance_work_mem = 1GB wal_buffers = 64kB
we are using ubuntu 10/etc/sysctl.confkernel.shmmax=35433480192kernel.shmall=8650752
Can anyone suggest better values?
thanks,Claire

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