Re: WALInsertLock contention

From: Stephen Frost <sfrost(at)snowman(dot)net>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Tatsuo Ishii <ishii(at)postgresql(dot)org>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: WALInsertLock contention
Date: 2011-02-17 04:39:54
Message-ID: 20110217043954.GR4116@tamriel.snowman.net
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* Robert Haas (robertmhaas(at)gmail(dot)com) wrote:
> On Wed, Feb 16, 2011 at 11:13 PM, Tatsuo Ishii <ishii(at)postgresql(dot)org> wrote:
> > I vaguely recall that UNISYS used to present patches to reduce the WAL
> > buffer lock contention and enhanced the CPU scalability limit from 12
> > to 16 or so(if my memory serves). Your second idea is somewhat related
> > to the patches?
>
> Not sure. Do you have a link to the archives, or any idea when this
> discussion occurred/what the subject line was?

They presented at PgCon a couple of years in a row, iirc..

http://www.pgcon.org/2007/schedule/events/16.en.html

I thought there was another one but I'm not finding it atm..

Thanks,

Stephen

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