On Mon, Mar 14, 2011 at 4:34 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Pavel Stehule <pavel.steh...@gmail.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.
I found that it was actually a fairly measurable component of the select-only test when running with shared_buffers cranked up to a reasonable value. But it'd probably be a lot easier to measure on a benchmark specifically targeted at the parser. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
