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Re: 8.0beta5 results w/ dbt2

From: Mark Wong <markw(at)osdl(dot)org>
To: Michael Paesold <mpaesold(at)gmx(dot)at>
Cc: pgsql-hackers(at)postgresql(dot)org, testperf-general(at)pgfoundry(dot)org
Subject: Re: 8.0beta5 results w/ dbt2
Date: 2004-11-30 16:41:33
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Lists: pgsql-hackers
On Tue, Nov 30, 2004 at 08:34:20AM +0100, Michael Paesold wrote:
> Mark Wong wrote:
> >I have some initial results using 8.0beta5 with our OLTP workload.
> > Off the bat I see about a 23% improvement in overall throughput.  The
> > most significant thing I've noticed was in the oprofile report where
> > FunctionCall2 and hash_seq_search have moved down the profile a bit.
> >
> > Also, I have libc with symbols now so we can see what it's doing with
> > in the oprofile output.
> >
> > 8.0beta5 results:
> >
> > throughput: 4076.97
> >
> > 8.0beta4 results:
> >
> > throughput: 3323.07
> Is it possible that there are some other differences effecting the result?
> At "Table Blocks Read" there is a "history" table in #191, but it does not 
> show up in #199. Just a thought,... but can you explain, Mark?
> Best Regards,
> Michael 

Ah, the chart differences are due to a faulty script.  That should be
cleared up and updated shortly.  As for other differences to the beta4
test, I ran the beta5 test for 30 minutes as opposed to 60,
random_page_cost=2 instead of 4, and I have archving disabled.  I've
generally found the latter two settings to have minimal effects but I
can always reverify.


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