Re: SIGUSR1 pingpong between master na autovacum launcher causes crash

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: SIGUSR1 pingpong between master na autovacum launcher causes crash
Date: 2009-08-24 15:54:03
Message-ID: 20090824155403.GC5962@alvh.no-ip.org
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Zdenek Kotala wrote:

> Just a confirmation that Alvaro's patch+ReleasePostmasterChildSlot() fix
> solves the problem and PostgreSQL survives well during a memory
> shortages.

So this patch would do it.

I think this stuff about postmaster child slots is later than
launcher/worker split. I don't recall seeing it before.

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

Attachment Content-Type Size
autovac-signal-2.patch text/x-diff 2.5 KB

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