Re: Strange (?) Index behavior?
От | Tom Lane |
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Тема | Re: Strange (?) Index behavior? |
Дата | |
Msg-id | 6687.1100298900@sss.pgh.pa.us обсуждение исходный текст |
Ответ на | Re: Strange (?) Index behavior? (Allen Landsidel <alandsidel@gmail.com>) |
Ответы |
Re: Strange (?) Index behavior?
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Список | pgsql-performance |
Allen Landsidel <alandsidel@gmail.com> writes: > On Thu, 11 Nov 2004 16:41:51 -0500, Tom Lane <tgl@sss.pgh.pa.us> wrote: >> Allen Landsidel <alandsidel@gmail.com> writes: >>> Clustering is really unworkable in this situation. >> >> Nonetheless, please do it in your test scenario, so we can see if it has >> any effect or not. > It did not, not enough to measure anyway, which does strike me as > pretty odd. Me too. Maybe we are barking up the wrong tree entirely, because I really expected to see a significant change. Lets start from first principles. While you are running this query, what sort of output do you get from "vmstat 1"? I'm wondering if it's I/O bound or CPU bound ... regards, tom lane
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