| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Mark Wong <markwkm(at)gmail(dot)com> |
| Subject: | Re: dependency between numbers keywords and parser speed |
| Date: | 2011-03-14 20:46:47 |
| Message-ID: | 4D7E7EB7.20409@agliodbs.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On 3/14/11 1:34 PM, Tom Lane wrote:
> Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
>> there was a discussion about impact of number of keyword for parser
>> speed. I did some synthetic tests and I didn't see any slowness on
>> pgbench when I increased a number of keywords.
>
> I don't see any particular reason to suppose that pgbench would be a
> good framework for stressing parsing speed. The queries it issues
> are of trivial length.
TPC-H might work well. Mark, is DBT3 still in usable condition?
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com
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