From: Jeffrey W. Baker <jwbaker@acm.org>
To: josh@agliodbs.com
Cc: pgsql-hackers@postgresql.org
Subject: Re: [PERFORM] A Better External Sort?
Date: Thu, 29 Sep 2005 11:15:41 -0700
Message-ID: <1128017741.11474.13.camel@noodles> (raw)
In-Reply-To: <200509291103.27344.josh@agliodbs.com>
References: <BF616D3C.104C3%llonergan@greenplum.com>
<1128015863.11474.9.camel@noodles>
<200509291103.27344.josh@agliodbs.com>
On Thu, 2005-09-29 at 11:03 -0700, Josh Berkus wrote:
> Jeff,
>
> > Josh, do you happen to know how many passes are needed in the multiphase
> > merge on your 60GB table?
>
> No, any idea how to test that?
I would just run it under the profiler and see how many times
beginmerge() is called.
-jwb
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To: pgsql-performance@postgresql.org
Cc: jwbaker@acm.org, josh@agliodbs.com, pgsql-hackers@postgresql.org
Subject: Re: [PERFORM] A Better External Sort?
In-Reply-To: <1128017741.11474.13.camel@noodles>
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