Re: Odd blocking (or massively latent) issue - even with EXPLAIN

Поиск
Список
Период
Сортировка
От Jim Vanns
Тема Re: Odd blocking (or massively latent) issue - even with EXPLAIN
Дата
Msg-id 1343119032.12579.140.camel@sys367.ldn.framestore.com
обсуждение исходный текст
Ответ на Re: Odd blocking (or massively latent) issue - even with EXPLAIN  (Craig Ringer <ringerc@ringerc.id.au>)
Список pgsql-performance
On Tue, 2012-07-24 at 08:30 +0800, Craig Ringer wrote:
> On 07/23/2012 10:46 PM, Jim Vanns wrote:
> > Nothing obvious - and we log a fair amount. No tmp table creations,
> > no locks held.
> >
> > To add to this EXPLAIN reports it took only 0.23ms to run (for example)
> > whereas the wall clock time is more like 20-30 minutes (or up to n hours
> > as I said where everything appears to click back into place at the same
> > time).
> How many concurrent connections do you have?

Between 4 and 64 at peak! max_connections is only set to 100.

Jim

> --
> Craig Ringer

--
Jim Vanns
Systems Programmer
Framestore


В списке pgsql-performance по дате отправления:

Предыдущее
От: "Riaan van den Dool"
Дата:
Сообщение: Re: Geoserver-PostGIS performance problems
Следующее
От: Jim Vanns
Дата:
Сообщение: Re: Odd blocking (or massively latent) issue - even with EXPLAIN