Date: Fri, 4 Jun 2004 21:23:17 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Robert Watson" <rwatson@freebsd.org>, "Ali Niknam" <ali@transip.nl> Cc: freebsd-hackers@freebsd.org Subject: Re: FreeBSD 5.2.1: Mutex/Spinlock starvation? Message-ID: <00fb01c44a71$c7f26d10$b3db87d4@multiplay.co.uk> References: <Pine.NEB.3.96L.1040604153442.34555O-100000@fledge.watson.org>
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----- Original Message -----
From: "Robert Watson" <rwatson@freebsd.org>
> You might want to try adding "options ADAPTIVE_MUTEXES" to your kernel
> configuration, which will cause mutexes to spin briefly on SMP systems
> before sleeping, and has been observed to improve performance quite a bit.
Thats very interesting is there a specific set off conditions
where it would pay off that you guys know of or is it more
a try it and see?
We run ~ 100 dual machines here the vast majority FreeBSD
as game servers and would consider upgrading the kernels
if you thought it would help.
Steve
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