Re: SIGUSR1 pingpong between master na autovacum launcher causes crash

From: Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM>
To: Alvaro Herrera <alvherre(at)commandprompt(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: 2009-08-22 08:30:30
Message-ID: 1250929830.1307.3.camel@localhost
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Alvaro Herrera píše v pá 21. 08. 2009 v 17:48 -0400:
> Tom Lane wrote:
>
> > I'd still like to have some fork-rate-limiting behavior in there
> > somewhere. However, it might make sense for the avlauncher to do that
> > rather than the postmaster. Does that idea seem more implementable?
>
<snip>
>
> Does it just need a longer delay?

I see two problem with delay. First is how big it should be? It depends
on machine speed and load. And second is that it can be interrupted by
signal.

Zdenek

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