linux-kernel - Re: [RFC] irqbalance: Mark in-kernel irqbalance as obsolete, set to N by default

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Message-Id: <20060803194550.9ff31bc1.akpm@osdl.org>
Date:	Thu, 3 Aug 2006 19:45:50 -0700
From:	Andrew Morton <akpm@...l.org>
To:	Auke Kok <auke-jan.h.kok@...el.com>
Cc:	linux-kernel@...r.kernel.org, jesse.brandeburg@...el.com,
	john.ronciak@...el.com, auke-jan.h.kok@...el.com,
	netdev@...r.kernel.org, arjan@...ux.intel.com
Subject: Re: [RFC] irqbalance: Mark in-kernel irqbalance as obsolete, set to
 N by default

On Mon, 31 Jul 2006 10:35:26 -0700
Auke Kok <auke-jan.h.kok@...el.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.

It would be better if poss to fix the balancer rather than deprecating it.
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