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Re: 8.4 COPY performance regression on Solaris

From: Kenneth Marshall <ktm(at)rice(dot)edu>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: 8.4 COPY performance regression on Solaris
Date: 2009-06-19 13:33:49
Message-ID: 20090619133349.GI23785@it.is.rice.edu (view raw or flat)
Thread:
Lists: pgsql-performance
Hi,

Looking at the XLogInsert() from 8.3 and 8.4, the 8.4
version includes a call to RecoveryInProgress() at
the top as well as a call to TRACE_POSTGRESQL_XLOG_INSERT().
Could either of those have caused a context switch or
cache flush resulting in worse performance.

Cheers,
Ken

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