Re: Spinlocks, yet again: analysis and proposed patches

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От Josh Berkus
Тема Re: Spinlocks, yet again: analysis and proposed patches
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Msg-id 200509130911.03677.josh@agliodbs.com
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Ответ на Re: Spinlocks, yet again: analysis and proposed patches  (Greg Stark <gsstark@mit.edu>)
Ответы Re: Spinlocks, yet again: analysis and proposed patches  (Douglas McNaught <doug@mcnaught.org>)
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Tom, All:

> It seems to me what you've found is an outright bug in the linux scheduler.
> Perhaps posting it to linux-kernel would be worthwhile.

For people using this on Linux 2.6, which scheduler are you using?   Deadline 
is the recommended one for databases, and does offer significant (+5-8%) 
benefits in some heavy-contention environments, at least in OSDL tests.

-- 
Josh Berkus
Aglio Database Solutions
San Francisco


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