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Free Cache Memory (Linux) and Postgresql

From: Denis Gasparin <denis(at)edistar(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Free Cache Memory (Linux) and Postgresql
Date: 2008-09-30 07:33:13
Message-ID: 48E1D639.7030808@edistar.com (view raw or flat)
Thread:
Lists: pgsql-general
Hi.

I'm evaluating to issue the drop_caches kernel command (echo 3 >
/proc/sys/vm/drop_caches) in order to free unused pagecache, directory
entries and inodes.

I'm thinking to schedule the command during low load moments after
forcing a sync command.

I wonder if this can cause pgsql problems of any kind. Any idea?

Thank you in advance,
 
Denis Gasparin
----
Edistar SRL

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