netdev - Re: r8169 regression: UDP packets dropped intermittantly

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Message-ID: <20130311001729.GA8606@marvin.atrad.com.au>
Date:	Mon, 11 Mar 2013 10:47:29 +1030
From:	Jonathan Woithe <jwoithe@...ad.com.au>
To:	Francois Romieu <romieu@...eil.com>
Cc:	netdev@...r.kernel.org, Jonathan Woithe <jwoithe@...ad.com.au>
Subject: Re: r8169 regression: UDP packets dropped intermittantly

On Mon, Mar 11, 2013 at 01:02:16AM +0100, Francois Romieu wrote:
> Jonathan Woithe <jwoithe@...ad.com.au> :
> [...]
> > While we can rely on the retry system to paper over this regression, the
> > behaviour of earlier kernels suggests that there is a real issue at play. 
> > Is there any chance that this can be looked at ?
> 
> Yes.
> 
> You'll have to be a bit patient since I still have to spend a pair of non
> worked hours on a compromised system. :o/

That's fine.  Do I wait for you to ping me about this?

> Take it for what it's worth but I don't test much with PREEMPT, NOHZ or
> SLUB and I never tried all those at the same time.

Fair enough.  I'm not using CONFIG_PREEMPT but NOHZ and SLUB are both in the
mix.  In the meantime I can easily test to see if turning off
CONFIG_PREEMPT_VOLUNTARY, CONFIG_NO_HZ and/or moving to SLAB changes things.
I'll report the findings.

Regards
  jonathan
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