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From: Josh Berkus <josh@agliodbs.com>
To: pgsql-performance@postgresql.org
Cc: Jignesh Shah <jigneshk@hotmail.com>
Subject: Re: MemoryContextSwitchTo  during table scan?
Date: Mon, 22 Aug 2005 12:12:56 -0700
Message-ID: <200508221212.57047.josh@agliodbs.com> (raw)
In-Reply-To: <BAY101-F302023446A2349317A516D0B60@phx.gbl>
References: <BAY101-F302023446A2349317A516D0B60@phx.gbl>

Jignesh,

> Also is there any way to optimize LockBuffer?

Yes, test on 8.1.   The buffer manager was re-written for 8.1.   You should 
see a decrease in both LockBuffer and context switch activity.

-- 
--Josh

Josh Berkus
Aglio Database Solutions
San Francisco

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