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Re: Bufer cache replacement LRU algorithm?

From: Kenneth Marshall <ktm(at)rice(dot)edu>
To: Mladen Gogala <mladen(dot)gogala(at)vmsinfo(dot)com>
Cc: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Bufer cache replacement LRU algorithm?
Date: 2010-11-03 16:52:16
Message-ID: 20101103165216.GC27429@aart.is.rice.edu (view raw or flat)
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Lists: pgsql-performance
Mladen,

You would need to check the mailing lists. The release notes
have it as being a clock sweep algorithm starting in version
8. Then additional changes were added to eliminate the cache
blowout caused by a sequential scan and by vacuum/autovacuum.
I do not believe that there are any parameters available other
than total size of the pool and whether sequential scans are
synchronized.

Regards,
Ken

On Wed, Nov 03, 2010 at 12:35:33PM -0400, Mladen Gogala wrote:
> Where can I find the documentation describing the buffer replacement 
> policy? Are there any parameters governing the page replacement policy?
>
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> Mladen Gogala Sr. Oracle DBA
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Next:From: Kevin GrittnerDate: 2010-11-03 17:09:42
Subject: Re: Bufer cache replacement LRU algorithm?
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Subject: Bufer cache replacement LRU algorithm?

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