Re: Performance of CLUSTER

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От Shaun Thomas
Тема Re: Performance of CLUSTER
Дата
Msg-id 4FD5F5DC.3080507@optionshouse.com
обсуждение исходный текст
Ответ на Performance of CLUSTER  (Mark Thornton <mthornton@optrak.com>)
Ответы Re: Performance of CLUSTER  (Jeff Davis <pgsql@j-davis.com>)
Список pgsql-performance
On 06/10/2012 03:20 AM, Mark Thornton wrote:

> 4. 3980922 rows, 1167MB, 276s
> 5. 31843368 rows, 9709MB, ~ 10 hours

Just judging based on the difference between these two, it would appear
to be from a lot of temp space thrashing. An order of magnitude more
rows shouldn't take over 100x longer to cluster, even with GIST. What's
your maintenance_work_mem setting?

--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-444-8534
sthomas@optionshouse.com

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