Re: Checkpoint Tuning Question

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc: Dan Armbrust <daniel(dot)armbrust(dot)list(at)gmail(dot)com>, pgsql general <pgsql-general(at)postgresql(dot)org>
Subject: Re: Checkpoint Tuning Question
Date: 2009-07-10 14:27:41
Message-ID: 22424.1247236061@sss.pgh.pa.us
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Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> ISTM more likely to be a problem with checkpointing clog or subtrans.
> That would block everybody and the scale of the problem is about right.

That's what I had been thinking too, but the log_checkpoint output
conclusively disproves it: those steps are taking less than 20msec.

regards, tom lane

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