netdev - Re: r8169 regression: UDP packets dropped intermittantly

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Message-ID: <20151119065718.GT8170@marvin.atrad.com.au>
Date:	Thu, 19 Nov 2015 17:27:18 +1030
From:	Jonathan Woithe <jwoithe@...ad.com.au>
To:	Francois Romieu <romieu@...zoreil.com>
Cc:	netdev@...r.kernel.org
Subject: Re: r8169 regression: UDP packets dropped intermittantly

On Thu, Nov 19, 2015 at 01:56:08AM +0100, Francois Romieu wrote:
> Jonathan Woithe <jwoithe@...ad.com.au> :
> [...]
> > I could try.  What's the most reliable way to determine this?  Use regular
> > ethtool queries about the time of the failures?
> 
> If you are neither space nor cpu constrained:
> 
> while : ; do
> 	echo $(date +%s.%N):$(ethtool -d eth0 raw on | base64 -w 0):$(ethtool -S eth0 | base64 -w 0)
> 	sleep 1
> done > gloubi
> 
> Expect 2.5~3Mo per hour.

We're certainly not disc constrained.  The high speed acquisition takes a
fair bit of CPU but there should still be sufficient free to at least give
the above a go.  I'll run some tests tomorrow and see what transpires.

Regards
  jonathan
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