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Date:      Mon, 24 Dec 2007 09:44:05 +0800
From:      David Xu <davidxu@FreeBSD.org>
To:        Robert Watson <rwatson@FreeBSD.org>
Cc:        arch@FreeBSD.org
Subject:   Re: Linux compatible setaffinity.
Message-ID:  <476F0EE5.1040404@freebsd.org>
In-Reply-To: <20071222183700.L5866@fledge.watson.org>
References:  <20071219211025.T899@desktop> <476B1973.6070902@freebsd.org> <20071222183700.L5866@fledge.watson.org>

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Robert Watson wrote:
> On Fri, 21 Dec 2007, David Xu wrote:
> 
>> I don't say no to these interfaces, but there is a need to tell user 
>> which cpus are sharing cache, or memory distance is closest enough, 
>> and which cpus are servicing interrupts, e.g, network interrupt and 
>> disks etc, etc, otherwise, blindly setting cpu affinity mask only can 
>> shoot itself in the foot.
> 
> While the Mac OS X API is pretty Mach-specific, it's worth taking a look 
> at their recently-announced affinity API:
> 
> http://developer.apple.com/releasenotes/Performance/RN-AffinityAPI/index.html 
> 
> 
> Robert N M Watson
> Computer Laboratory
> University of Cambridge
> 


I like the interfaces, it is more flexible.

Thanks
David Xu



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