Re: profiling pgbench

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: profiling pgbench
Date: 2010-11-24 21:11:55
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Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> I did some profiling of pgbench -j 36 -c 36 -T 500 banging on my
> two-core desktop box - with synchronous_commit turned off to keep the
> fsyncs from dominating the profile - and got these results:

> 29634 4.7124 postgres base_yyparse

Seems like pgbench is a poster child for the value of prepared
statements. Have you tried it with "-M prepared"?

I'd take this with a grain of salt as to whether it's representative of
real applications, of course.

regards, tom lane

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