| 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 |
| Message-ID: | 21620.1290633115@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
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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