From: michael@optusnet.com.au
To: Arjan van de Ven <arjanv@redhat.com>
Cc: "Martin J. Bligh" <mbligh@aracnet.com>,
"Nakajima, Jun" <jun.nakajima@intel.com>,
Jeff Garzik <jgarzik@pobox.com>, Andrew Morton <akpm@osdl.org>,
Anton Blanchard <anton@samba.org>,
linux-kernel@vger.kernel.org
Subject: Re: CONFIG_IRQBALANCE for AMD64?
Date: 29 May 2004 18:41:46 +1000 [thread overview]
Message-ID: <m1zn7r7hh1.fsf@mo.optusnet.com.au> (raw)
In-Reply-To: <20040528184411.GE9898@devserv.devel.redhat.com>
Arjan van de Ven <arjanv@redhat.com> writes:
> On Fri, May 28, 2004 at 11:33:32AM -0700, Martin J. Bligh wrote:
[...]
> > Also, we may well have more than 1 CPU's worth of traffic to
> > process in a large network server.
>
> One NIC? I've yet to see that ;)
Oh, and another corner case.
Say you have a cpu-bound process on an SMP box.
Say you're also using a large chunk of a CPU processing
interrupts from a single IRQ.
What stops the cpu-bound process being scheduled onto
the same CPU as the interrupt handlers?
Now you've got one idle CPU, and one seriously overloaded
CPU.
Michael.
next prev parent reply other threads:[~2004-05-29 8:42 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-28 18:20 CONFIG_IRQBALANCE for AMD64? Nakajima, Jun
2004-05-28 18:33 ` Martin J. Bligh
2004-05-28 18:44 ` Arjan van de Ven
2004-05-28 18:57 ` Martin J. Bligh
2004-05-28 19:01 ` Arjan van de Ven
2004-05-29 8:38 ` michael
2004-05-29 8:41 ` michael [this message]
2004-05-29 8:45 ` Arjan van de Ven
-- strict thread matches above, loose matches on Subject: below --
2004-05-28 23:37 Nakajima, Jun
2004-05-28 22:05 Nakajima, Jun
2004-05-28 22:54 ` Andi Kleen
2004-05-29 1:27 ` Nick Piggin
2004-05-29 10:06 ` Andi Kleen
2004-05-29 10:10 ` Nick Piggin
2004-05-29 11:18 ` Andi Kleen
[not found] <20Uhn-7bP-11@gated-at.bofh.it>
[not found] ` <20UqZ-7i7-5@gated-at.bofh.it>
2004-05-28 21:45 ` Andi Kleen
2004-05-28 17:09 Nakajima, Jun
2004-05-28 17:40 ` Jeff Garzik
2004-05-28 17:45 ` Arjan van de Ven
2004-05-28 17:46 ` Martin J. Bligh
2004-05-28 17:57 ` Arjan van de Ven
2004-05-28 19:51 ` Nivedita Singhvi
2004-05-28 19:58 ` Jeff Garzik
2004-05-28 20:14 ` Nivedita Singhvi
2004-05-28 21:45 ` Jeff Garzik
2004-05-28 20:03 ` Arjan van de Ven
2004-05-27 3:48 Thomas Zehetbauer
2004-05-27 5:13 ` Jeff Garzik
2004-05-27 16:36 ` Thomas Zehetbauer
2004-05-27 16:50 ` Arjan van de Ven
2004-05-27 21:37 ` Chris Wedgwood
2004-05-27 17:03 ` Anton Blanchard
2004-05-27 22:36 ` Thomas Zehetbauer
2004-05-28 5:57 ` Arjan van de Ven
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