linux-kernel - Re: [patch] revert: [NET]: Fix races in net_rx

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Message-ID: <20070717181857.GA16918@elte.hu>
Date:	Tue, 17 Jul 2007 20:18:57 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Olaf Kirch <olaf.kirch@...cle.com>
Cc:	Jarek Poplawski <jarkao2@...pl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, davem@...emloft.net
Subject: Re: [patch] revert: [NET]: Fix races in net_rx_action vs netpoll


* Olaf Kirch <olaf.kirch@...cle.com> wrote:

> Hi Ingo,
> 
> On Tuesday 17 July 2007 18:57, Ingo Molnar wrote:
> > i've done the patch below, but it did not change the timeouts nor did it 
> > solve the 'no network' problem. netconsole output hung earlier as well.
> Hm, pity.
> 
> To rule out any e1000 problem, can you try the the following please, 
> both with HZ=250 and HZ=1000?

done, find the logs here:

 http://redhat.com/~mingo/misc/100hz.log
 http://redhat.com/~mingo/misc/1000hz.log

(one is HZ=100, the other HZ=1000. HZ=100 produces a hung network just 
like HZ=250.)

no 'rx_sched set' messages in either case. Network still hung for 
HZ=100, and is working for HZ=1000.

	Ingo
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