From: Auke Kok <auke-jan.h.kok@intel.com>
To: Andrew Morton <akpm@osdl.org>
Cc: Auke Kok <auke-jan.h.kok@intel.com>,
linux-kernel@vger.kernel.org, jesse.brandeburg@intel.com,
john.ronciak@intel.com, netdev@vger.kernel.org,
arjan@linux.intel.com
Subject: Re: [RFC] irqbalance: Mark in-kernel irqbalance as obsolete, set to N by default
Date: Fri, 04 Aug 2006 07:25:10 -0700 [thread overview]
Message-ID: <44D358C6.3080406@intel.com> (raw)
In-Reply-To: <20060803194550.9ff31bc1.akpm@osdl.org>
Andrew Morton wrote:
> On Mon, 31 Jul 2006 10:35:26 -0700
> Auke Kok <auke-jan.h.kok@intel.com> wrote:
>
>> We've recently seen a number of user bug reports against e1000 that the
>> in-kernel irqbalance code is detrimental to network latency. The algorithm
>> keeps swapping irq's for NICs from cpu to cpu causing extremely high network
>> latency (>1000ms).
>
> What kernel versions? Some IRQ balancer fixes went in shortly after 2.6.17.
user reports show 2.6.17.1 having the problem, I'm trying to get more details
information, and will ask if 2.6.18rc3 or so does better for them.
Cheers,
Auke
next prev parent reply other threads:[~2006-08-04 14:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-31 17:35 [RFC] irqbalance: Mark in-kernel irqbalance as obsolete, set to N by default Auke Kok
2006-08-04 2:45 ` Andrew Morton
2006-08-04 14:25 ` Auke Kok [this message]
2006-08-04 14:36 ` Arjan van de Ven
[not found] <6EJUl-4br-13@gated-at.bofh.it>
[not found] ` <6FXVd-1Gl-11@gated-at.bofh.it>
[not found] ` <6G9jL-1Yg-41@gated-at.bofh.it>
2006-08-04 21:48 ` Bodo Eggert
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