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From: Arjan van de Ven <arjanv@redhat.com>
To: Keith Mannthey <kmannth@us.ibm.com>
Cc: Zwane Mwaikambo <zwane@linuxpower.ca>,
	"Martin J. Bligh" <mbligh@aracnet.com>,
	davem@redhat.com, habanero@us.ibm.com, haveblue@us.ibm.com,
	wli@holomorphy.com, arjanv@redhat.com, pbadari@us.ibm.com,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	gh@us.ibm.com, johnstul@us.ltcfwd.linux.ibm, jamesclv@us.ibm.com,
	Andrew Morton <akpm@digeo.com>
Subject: Re: userspace irq balancer 
Date: Thu, 22 May 2003 08:17:23 +0000	[thread overview]
Message-ID: <20030522081723.B25926@devserv.devel.redhat.com> (raw)
In-Reply-To: <1053560371.19335.4725.camel@dyn9-47-17-180.beaverton.ibm.com>; from kmannth@us.ibm.com on Wed, May 21, 2003 at 04:39:29PM -0700

On Wed, May 21, 2003 at 04:39:29PM -0700, Keith Mannthey wrote:
>   This makes building meaningful apicid masks (more than one cpu) a bit
> tricky.  For example a user would have to know that cpus 1,2,9,10 were
> on the same cluster not (1,2,3,4) as you would expect. Since the bios
> can do what it will it makes it hard to build masks of capable clusters
> easily in all situations.

with sysfs the kernel can export some topology info; iirc that was desired
anyway for other HPC applications anyway ?


      parent reply	other threads:[~2003-05-22  8:04 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-21 18:28 userspace irq balancer Keith Mannthey
2003-05-21 19:19 ` userspace irq =?unknown-8bit?Q?balance?= =?unknown-8bit?B?csKg?= William Lee Irwin III
2003-05-21 23:39 ` userspace irq balancer Keith Mannthey
2003-05-21 23:42   ` userspace irq balancerB David S. Miller
2003-05-22  0:14   ` userspace irq =?unknown-8bit?Q?balance?= =?unknown-8bit?B?csKg?= William Lee Irwin III
2003-05-22  8:17   ` Arjan van de Ven [this message]

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