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Re: 9.3 feature proposal: vacuumdb -j #

From: Jaime Casanova <jaime(at)2ndquadrant(dot)com>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: pgsql-hackers(at)postgresql(dot)org, Susanne Ebrecht <susanne(at)2ndquadrant(dot)com>
Subject: Re: 9.3 feature proposal: vacuumdb -j #
Date: 2012-01-17 12:33:06
Message-ID: CAJKUy5hJLSsJBAii1YaWa7jvGqZY2m78cWOc05xsQuTj0ypUYA@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On Tue, Jan 17, 2012 at 7:23 AM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> On Tuesday, January 17, 2012 01:18:53 PM Susanne Ebrecht wrote:
>> I would prefer to have an option that the user is able to tell on how much
>> cores it should be shared. Something like --share-cores=N.
> Uhm. -j # does exactly that or am I missing your point?
>

not really.

if you have 12 cores and you say -j 12 you would have 1 process per
core, with Susanne's suggestion, AFAIUI, you can say -j 12
--shared-cores=6... so you would only use 6 cores of the 12 and have 2
processes per core

-- 
Jaime Casanova         www.2ndQuadrant.com
Professional PostgreSQL: Soporte 24x7 y capacitación

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