Re: long wait times in ProcessCatchupEvent()

Поиск
Список
Период
Сортировка
От bock@openit.de (Julian v. Bock)
Тема Re: long wait times in ProcessCatchupEvent()
Дата
Msg-id lp8vz7715y.fsf@warpcore.i.openit.de
обсуждение исходный текст
Ответ на Re: long wait times in ProcessCatchupEvent()  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-performance
Hi

>>>>> "TL" == Tom Lane <tgl@sss.pgh.pa.us> writes:

TL> bock@openit.de (Julian v. Bock) writes:
>> I have the problem that on our servers it happens regularly under a
>> certain workload (several times per minute) that all backend
>> processes get a SIGUSR1 and spend several seconds in
>> ProcessCatchupEvent().

TL> This is fixed in 8.4 and up.
TL> http://archives.postgresql.org/pgsql-committers/2008-06/msg00227.php

Thanks for the quick reply.

TL> If you aren't willing to move off 8.3 you might be able to
TL> ameliorate the problem by reducing the volume of catalog changes,
TL> but that can be pretty hard if you're dependent on temp tables.

Upgrading to 8.4 or 9.0 is not possible at the moment but if it is only
catalog changes I can probably work around that.

Regards,
Julian v. Bock

--
Julian v. Bock               Projektleitung Software-Entwicklung
OpenIT GmbH                  Tel +49 211 239 577-0
In der Steele 33a-41         Fax +49 211 239 577-10
D-40599 Düsseldorf           http://www.openit.de
________________________________________________________________
HRB 38815 Amtsgericht Düsseldorf             USt-Id DE 812951861
Geschäftsführer: Oliver Haakert, Maurice Kemmann

В списке pgsql-performance по дате отправления:

Предыдущее
От: "Kevin Grittner"
Дата:
Сообщение: Re: long wait times in ProcessCatchupEvent()
Следующее
От: Lew
Дата:
Сообщение: Re: PostgreSQL