Re: performance drop on 8.2.4, reverting to 8.1.4

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От Tom Lane
Тема Re: performance drop on 8.2.4, reverting to 8.1.4
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Msg-id 11710.1181266274@sss.pgh.pa.us
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Ответ на Re: performance drop on 8.2.4, reverting to 8.1.4  (Alvaro Herrera <alvherre@commandprompt.com>)
Ответы Re: performance drop on 8.2.4, reverting to 8.1.4  ("Steven Flatt" <steven.flatt@gmail.com>)
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Alvaro Herrera <alvherre@commandprompt.com> writes:
> Tom Lane escribi�:
>> I was hoping that the auto plan invalidation code in CVS HEAD would get
>> it out of this problem, but it seems not to for the problem-as-given.
>> The trouble is that it won't change plans until autovacuum analyzes the
>> tables, and that won't happen until the transaction commits and sends
>> off its I-inserted-lotsa-rows report to the stats collector.

> I think there is something we can do about this -- drop the default
> value for analyze threshold.

Maybe worth doing, but it doesn't help for Steve's example.

            regards, tom lane

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