Horton

Re: CPU costs of random_zipfian in pgbench

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Fabien COELHO <coelho@cri.ensmp.fr>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>, Tomas Vondra <tomas.vondra@2ndquadrant.com>, Georgios Kokolatos <gkokolatos@pm.me>, PostgreSQL Developers <pgsql-hackers@lists.postgresql.org>
Date: 2019-04-03T21:17:02Z
Lists: pgsql-hackers 
Fabien COELHO <coelho@cri.ensmp.fr> writes:
>> Ah, so we now we can get rid of the TState * being passed around
>> separately for expression execution, too?

> Indeed.

Indeed.  Pushed with some additional cleanup.

			regards, tom lane

Commits

  1. Remove now-unnecessary thread pointer arguments in pgbench.

  2. Restrict pgbench's zipfian parameter to ensure good performance.