Re: CPU costs of random_zipfian in pgbench

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
Cc: Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Georgios Kokolatos <gkokolatos(at)pm(dot)me>, PostgreSQL Developers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: CPU costs of random_zipfian in pgbench
Date: 2019-04-01 21:59:04
Message-ID: 19770.1554155944@sss.pgh.pa.us
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Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> writes:
> On 2019-Apr-01, Tom Lane wrote:
>> Seems reasonable. Pushed with minor documentation editing.

> Ah, so we now we can get rid of the TState * being passed around
> separately for expression execution, too?

I didn't really look for follow-on simplifications, but if there
are some to be made, great. (That would be further evidence for
my opinion that this feature was overcomplicated ...)

regards, tom lane

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