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From: Jeff Garzik <jgarzik@pobox.com>
To: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
Cc: ncunningham@cyclades.com, kwijibo@zianet.com,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Should kirqd work on HT?
Date: Sat, 19 Feb 2005 11:30:53 -0500	[thread overview]
Message-ID: <421769BD.4060606@pobox.com> (raw)
In-Reply-To: <88056F38E9E48644A0F562A38C64FB60040DBACB@scsmsx403.amr.corp.intel.com>

Pallipadi, Venkatesh wrote:
> You are right. Kernel balancer doesn't move around the irqs, unless it
> has too many interrupts. The logic is moving around interrupts all the
> time will not be good on caches. So, there is a threshold above which
> the balancer start moving things around.
> 
> You should see them moving around if you do 'ping -f' or a big 'dd' from
> the disk.

If kirqd is moving NIC interrupts, it's broken.

(and another reason why irqbalanced is preferable)

	Jeff




  reply	other threads:[~2005-02-19 16:31 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-02-19 13:30 Should kirqd work on HT? Pallipadi, Venkatesh
2005-02-19 16:30 ` Jeff Garzik [this message]
2005-02-20 14:44   ` Martin J. Bligh
2005-02-21  1:08     ` Jeff Garzik
  -- strict thread matches above, loose matches on Subject: below --
2005-02-19  6:31 Nigel Cunningham
2005-02-19  6:44 ` Kwijibo
2005-02-19  9:02   ` Nigel Cunningham
2005-02-19  9:36     ` Arjan van de Ven
2005-02-19  6:52 ` Jeff Garzik
2005-02-19  9:07   ` Nigel Cunningham
2005-02-19  9:36     ` Arjan van de Ven
2005-02-19 10:54       ` Nigel Cunningham
2005-02-19 10:58       ` Nigel Cunningham
2005-02-19 11:49         ` Arjan van de Ven
2005-02-20 14:45 ` Martin J. Bligh

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