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Re: Parallel Vacuum

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Dimitri <dimitrik(dot)fr(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Parallel Vacuum
Date: 2007-03-22 15:12:50
Message-ID: 20070322151243.GH4102@alvh.no-ip.org (view raw or flat)
Thread:
Lists: pgsql-performance
Dimitri escribió:
> On Thursday 22 March 2007 14:52, Alvaro Herrera wrote:
> > Dimitri escribió:
> > > Folks,
> > >
> > > is there any constrains/problems/etc. to run several vacuum processes in
> > > parallel while each one is 'vaccuming' one different table?
> >
> > No, no problem.  Keep in mind that if one of them takes a very long
> > time, the others will not be able to remove dead tuples that were
> > killed while the long vacuum was running -- unless you are in 8.2.
> 
> Yes, I'm using the last 8.2.3 version. So, will they *really* processing in 
> parallel, or will block each other step by step?

They won't block.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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