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To: "Jerry Champlin" <jchamplin@absolute-performance.com>
cc: pgsql-performance@postgresql.org
Subject: Re: Is there a way to SubPartition? 
In-reply-to: <006f01c90882$84f80ff0$8ee82fd0$@com> 
References: <48B55A8D.1050209@absolute-performance.com>
	<22840.1219845710@sss.pgh.pa.us>
	<006f01c90882$84f80ff0$8ee82fd0$@com>
Comments: In-reply-to "Jerry Champlin" <jchamplin@absolute-performance.com>
	message dated "Wed, 27 Aug 2008 14:21:41 -0600"
Date: Wed, 27 Aug 2008 16:54:03 -0400
Message-ID: <29791.1219870443@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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"Jerry Champlin" <jchamplin@absolute-performance.com> writes:
> We have synchronous_commit turned off, commit siblings set to 5,
> commit_delay set to 50,000.  With synchronous_commit off does it make
> any sense to be grouping commits?

No.  In fact commit_delay is a total no-op in that mode.  If it were
doing anything I think you'd have found that to be a counterproductively
large setting ...

			regards, tom lane