Date: Tue, 27 Jan 2004 08:38:01 +0100
From: Sander <sander@humilis.net>
To: Wakko Warner <wakko@animx.eu.org>
Cc: Robert Love <rml@ximian.com>, linux-kernel@vger.kernel.org
Subject: Re: 2.6.1 dual xeon
Message-ID: <20040127073801.GB9708@favonius>
Reply-To: sander@humilis.net
References: <20040124203646.A8709@animx.eu.org> <1074995006.5246.1.camel@localhost> <20040125083712.A9318@animx.eu.org>
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Wakko Warner wrote (ao):
> > > I recently aquired a dual xeon system. HT is enabled which shows
> > > up as 4 cpus. I noticed that all interrupts are on CPU0. Can
> > > anyone tell me why this is?
> > 
> > The APIC needs to be programmed to deliver interrupts to certain
> > processors.
> > 
> > In 2.6, this is done in user-space via a program called irqbalance:
> 
> Thanks, working great. (Debian by the way)

Ehm, IIRC the "all interrupts are on CPU0" is how it is supposed to work
with a 2.6 kernel? The interrupts should spread if you have _a_lot_ of
them. This gives better performance than spreading the interrupts. Did I
read this on the list, or am I completely wrong here?

-- 
Humilis IT Services and Solutions
http://www.humilis.net
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