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Date:	Sat, 23 Nov 2013 21:39:33 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Arno Wagner <arno@...ner.name>
Cc:	Ben Hutchings <ben@...adent.org.uk>, netdev@...r.kernel.org,
	stephen@...workplumber.org
Subject: Re: Fw: [Bug 65261] New: Packet loss or excessive packet delay repeatedly for some seconds

On Sat, Nov 23, 2013 at 09:20:47PM +0100, Arno Wagner wrote:
> On Sat, Nov 23, 2013 at 17:45:58 CET, Ben Hutchings wrote:
> > On Sat, 2013-11-23 at 13:11 +0100, Arno Wagner wrote:
> > > On Sat, Nov 23, 2013 at 05:33:59 CET, Hannes Frederic Sowa wrote:
> > [...]
> > > > Could you try dropwatch while the packet drops are happening?
> > > > Often it is helpful to check ip monitor all if events happen during bursty
> > > > losses.
> > > 
> > > Sorry, but dropwatch is not in Debian and compiling it from sources
> > > seem to require something called "rpmbuild". Hence I cannot use
> > > it or at least would have to write my own Makefile for it. 
> > 
> > You could use 'perf script net_dropmonitor' instead.
> 
> That gets me "invalid or unsupported event: 'skb:kfree_skb'"
> with 3.10.17, so I guess it will not work with 3.10.19 either.

You need CONFIG_DROP_MONITOR enabled on your kernel build.

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