From: Jean-Max Reymond <jmreymond@gmail.com>
To: pgsql-performance@postgresql.org
Subject: size of cache
Date: Wed, 13 Jul 2005 10:20:51 +0200
Message-ID: <4b09a0c05071301207d452ace@mail.gmail.com> (raw)
with my application, it seems that size of cache has great effect:
from 512 Kb of L2 cache to 1Mb boost performance with a factor 3 and
20% again from 1Mb L2 cache to 2Mb L2 cache.
I don't understand why a 512Kb cache L2 is too small to fit the data's
does it exist a tool to trace processor activity and confirm that
processor is waiting for memory ?
does it exist a tool to snapshot postgres activity and understand
where we spend time and potentialy avoid the bottleneck ?
thanks for your tips.
--
Jean-Max Reymond
CKR Solutions Open Source
Nice France
http://www.ckr-solutions.com
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To: pgsql-performance@postgresql.org
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Subject: Re: size of cache
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