Re: 7.3 schedule

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Barry Lind <barry(at)xythos(dot)com>
Cc: Neil Conway <nconway(at)klamath(dot)dyndns(dot)org>, Ashley Cambrell <ash(at)freaky-namuh(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: 7.3 schedule
Date: 2002-04-11 20:48:43
Message-ID: 18125.1018558123@sss.pgh.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

Barry Lind <barry(at)xythos(dot)com> writes:
> ...
> Since we
> don't currently provide any information to the user on the relative cost
> of the parse, plan and execute phases, the end user is going to be
> guessing IMHO.

You can in fact get that information fairly easily; set
show_parser_stats, show_planner_stats, and show_executor_stats to 1
and then look in the postmaster log for the results. (Although to be
fair, this does not provide any accounting for the CPU time expended
simply to *receive* the query string, which might be non negligible
for huge queries.)

It would be interesting to see some stats for the large-BLOB scenarios
being debated here. You could get more support for the position that
something should be done if you had numbers to back it up.

regards, tom lane

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Barry Lind 2002-04-11 20:56:12 Re: 7.3 schedule
Previous Message Tom Lane 2002-04-11 20:23:30 Re: Implicit coercions need to be reined in