linux-kernel - Re: 24 lost ticks with 2.6.20.10 kernel

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Date:	Wed, 02 May 2007 11:14:52 -0700
From:	"Kok, Auke" <auke-jan.h.kok@...el.com>
To:	Michel Lespinasse <walken@....org>
CC:	Chuck Ebbert <cebbert@...hat.com>, linux-kernel@...r.kernel.org,
	Dave Jones <davej@...hat.com>, Jeb Cramer <cramerj@...el.com>,
	John Ronciak <john.ronciak@...el.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: Re: 24 lost ticks with 2.6.20.10 kernel

Michel Lespinasse wrote:
>> I've had good results with 2.6.21.1 (even running tickless :)) on these 
>> NICs. Have you tried that yet?
> 
> Not yet. Coming up... I'd prefer not to rely on new kernels at this
> point though - but I can certainly try it just to report on current status.

I just checked and the fix I was referring to earlier didn't make it into 
2.6.21-final. You can get 2.6.21-git1 from kernel.org which has the fix. See

http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.21-git1.log

for the changelog and commit id's for the patch:

commit c58b8e4a25a1ba347a0e5d21984c97bd296f1691
Merge: afc2e82... f50393f...
Author: Linus Torvalds <torvalds@...dy.linux-foundation.org>
Date:   Fri Apr 27 10:14:53 2007 -0700

     Merge branch 'e1000-fixes' of 
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6

     * 'e1000-fixes' of 
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
       e1000: FIX: Stop raw interrupts disabled nag from RT
       e1000: FIX: firmware handover bits
       e1000: FIX: be ready for incoming irq at pci_request_irq

Please give this a try and see if it resolves your issues.

hth,

Auke
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