linux-kernel - Re: 2.6.27/2.6.28: irqbalance dies shortly after starting the daemon on x86 but not x86

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Message-ID: <20090102223508.GA5181@bombadil.infradead.org>
Date:	Fri, 2 Jan 2009 17:35:08 -0500
From:	Kyle McMartin <kyle@...radead.org>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	linux-kernel@...r.kernel.org, arjan@...ux.intel.com
Subject: Re: 2.6.27/2.6.28: irqbalance dies shortly after starting the
	daemon on x86 but not x86_64, why?

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
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