From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Joerg Sommrey <jo@sommrey.de>,
Linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: Question on CONFIG_IRQBALANCE / 2.6.x
Date: Fri, 18 Feb 2005 14:39:49 -0800 [thread overview]
Message-ID: <4440000.1108766389@flay> (raw)
In-Reply-To: <20050218213332.GA13485@sommrey.de>
>
> there's something I don't understand: With IRQBALANCE *enabled* almost
> all interrupts are processed on CPU0. This changed in an unexpected way
> after disabling IRQBALANCE: now all interrupts are distributed uniformly
> to both CPUs. Maybe it's intentional, but it's not what I expect when a
> config option named IRQBALANCE is *disabled*.
>
> Can anybody comment on this?
If you have a Pentium 3 based system, by default they'll round robin.
If you turn on IRQbalance, they won't move until the traffic gets high
enough load to matter. That's presumably what you're seeing.
m.
next prev parent reply other threads:[~2005-02-18 22:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-18 21:33 Question on CONFIG_IRQBALANCE / 2.6.x Joerg Sommrey
2005-02-18 22:39 ` Martin J. Bligh [this message]
2005-02-18 22:57 ` Joerg Sommrey
2005-02-18 23:11 ` Jeff Garzik
2005-02-20 14:41 ` Martin J. Bligh
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