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From: Kyle McMartin <kyle@infradead.org>
To: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: linux-kernel@vger.kernel.org, arjan@linux.intel.com
Subject: Re: 2.6.27/2.6.28: irqbalance dies shortly after starting the daemon on x86 but not x86_64, why?
Date: Fri, 2 Jan 2009 17:35:08 -0500	[thread overview]
Message-ID: <20090102223508.GA5181@bombadil.infradead.org> (raw)
In-Reply-To: <alpine.DEB.1.10.0812300706390.11356@p34.internal.lan>

On Tue, Dec 30, 2008 at 07:26:30AM -0500, Justin Piszcz wrote:
> (same on both x86 and x86_64):
> # cat /etc/default/irqbalance
> #Configuration for the irqbalance daemon
>
> #Should irqbalance be enabled?
> ENABLED=1
> #Balance the IRQs only once?
> ONESHOT="0"
>

If there is only one cache domain, ie: one physical cpu socket with two
cores sharing a cache, then irqbalance will return after the initial
balance since it would be pointless to continue running. (It forces
itself into oneshot mode.)

regards, Kyle

      parent reply	other threads:[~2009-01-02 22:35 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-30 12:26 2.6.27/2.6.28: irqbalance dies shortly after starting the daemon on x86 but not x86_64, why? Justin Piszcz
2009-01-02 22:23 ` Arjan van de Ven
2009-01-03  0:32   ` Justin Piszcz
2009-01-03  1:08     ` Kyle McMartin
2009-01-03  1:11       ` Justin Piszcz
2009-01-02 22:35 ` Kyle McMartin [this message]

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