Re: futex - Mailing list pgsql-hackers

From Josh Berkus
Subject Re: futex
Date
Msg-id 200408241843.14102.josh@agliodbs.com
Whole thread Raw
In response to futex  (Gaetano Mendola <mendola@bigfoot.com>)
Responses Re: futex
List pgsql-hackers
Gaetano,

> I knew there was an evaluation on the futex vs spinlock,
> and Josh Berkus on IRC told me that there was only a 20%
> performance increase, is this increase to throw away ?

Before we get totally off track here ....

I evaluated futexes strictly as an attempt to solve the context switch storm 
bug.   I did NOT test whether they improved performance overall.

-- 
Josh Berkus
Aglio Database Solutions
San Francisco


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