| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Will Rutherdale (rutherw)" <rutherw(at)cisco(dot)com> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Is there a meaningful benchmark? |
| Date: | 2009-03-20 16:06:29 |
| Message-ID: | 14357.1237565189@sss.pgh.pa.us |
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| Lists: | pgsql-general |
"Will Rutherdale (rutherw)" <rutherw(at)cisco(dot)com> writes:
> However, keeping the KISS principle in mind, you can create a benchmark
> that simply sets up a sample database and forks off a bunch of processes
> to do random updates for an hour, say. Dead simple.
Indeed, and more than likely dead useless. The only benchmark that
really counts is one's live application, which is probably not
update-only and probably has a fairly non-random update pattern too.
What people have been trying to point out to you is that you can
certainly measure *something* with a benchmark test that has no thought
behind it, but it's not clear whether the numbers you come up with will
have any real-world value.
regards, tom lane
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