Re: different io elevators in linux

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От Josh Berkus
Тема Re: different io elevators in linux
Дата
Msg-id 200410251009.17575.josh@agliodbs.com
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Ответ на different io elevators in linux  (Bjorn Bength <bjorn.bength@curalia.se>)
Ответы Re: different io elevators in linux  (Mark Wong <markw@osdl.org>)
Список pgsql-performance
Bjorn,

> I haven't read much FAQs but has anyone done some benchmarks with
> different io schedulers in linux with postgresql?

According to OSDL, using the "deadline" scheduler sometimes results in a
roughly 5% boost to performance, and sometimes none, depending on the
application.   We use it for all testing, though, just in case.

--Josh

--
--Josh

Josh Berkus
Aglio Database Solutions
San Francisco

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