From: Gregory Stark <stark@enterprisedb.com>
To: Mark Wong <markwkm@gmail.com>
Cc: pgsql-performance\@postgresql.org <pgsql-performance@postgresql.org>
Cc: Selena Deckelmann <selenamarie@gmail.com>
Cc: Gabrielle Roth <gorthx@gmail.com>
Subject: Re: dbt-2 tuning results with postgresql-8.3.5
Date: Mon, 22 Dec 2008 10:56:50 +0000
Message-ID: <871vw0v5ot.fsf@oxford.xeocode.com> (raw)
In-Reply-To: <70c01d1d0812220050kb1f755etea3ecada3f3b8631@mail.gmail.com>
References: <70c01d1d0812201654i5f55150ep619a6c7ff094470@mail.gmail.com>
<87hc4yuxbl.fsf@oxford.xeocode.com>
<552F108E-9732-4ED6-B45D-6C651C63565E@gmail.com>
<87d4fkvgtj.fsf@oxford.xeocode.com>
<70c01d1d0812220050kb1f755etea3ecada3f3b8631@mail.gmail.com>
"Mark Wong" <markwkm@gmail.com> writes:
> Thanks for the input.
In a more constructive vein:
1) autovacuum doesn't seem to be properly tracked. It looks like you're just
tracking the autovacuum process and not the actual vacuum subprocesses
which it spawns.
2) The response time graphs would be more informative if you excluded the
ramp-up portion of the test. As it is there are big spikes at the low end
but it's not clear whether they're really part of the curve or due to
ramp-up. This is especially visible in the stock-level graph where it
throws off the whole y scale.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
Ask me about EnterpriseDB's On-Demand Production Tuning
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To: pgsql-performance@postgresql.org
Cc: stark@enterprisedb.com, markwkm@gmail.com, selenamarie@gmail.com, gorthx@gmail.com
Subject: Re: dbt-2 tuning results with postgresql-8.3.5
In-Reply-To: <871vw0v5ot.fsf@oxford.xeocode.com>
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