From: | "Matthew T(dot) O'Connor" <matthew(at)zeut(dot)net> |
---|---|
To: | Csaba Nagy <nagy(at)ecircle-ag(dot)com> |
Cc: | Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Christopher Browne <cbbrowne(at)acm(dot)org>, postgres hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Automatic free space map filling |
Date: | 2006-03-04 00:50:22 |
Message-ID: | 4408E44E.8090004@zeut.net |
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Thread: | |
Lists: | pgsql-hackers |
Csaba Nagy wrote:
>> So he rather needs Hannu Krosing's patch for simultaneous vacuum ...
>>
>
> Well, I guess that would be a good solution to the "queue table"
> problem. The problem is that I can't deploy that patch on our production
> systems without being fairly sure it won't corrupt any data... and I
> can't rely on non-production testing either. Basically I'm waiting to
> see Tom saying it will fly :-)
That patch is a step forward if it's deemed OK by the powers that be.
However, autovacuum would still need to be taught to handle simultaneous
vacuums. I suppose that in the interim, you could disable autovacuum
for the problematic queue table and have cron issue a manual vacuum
command for that table at the required frequency.
Anyone up for working on / testing / improving Hannu's patch? I think
it's beyond my skill set.
Matt
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