netdev - Re: [PATCH net] selftests: net: packetdrill: xfail all problems on slow machines

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Message-ID: <20250801140557.53a36012@kernel.org>
Date: Fri, 1 Aug 2025 14:05:57 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Willem de Bruijn <willemdebruijn.kernel@...il.com>
Cc: davem@...emloft.net, netdev@...r.kernel.org, edumazet@...gle.com,
 pabeni@...hat.com, andrew+netdev@...n.ch, horms@...nel.org,
 shuah@...nel.org, willemb@...gle.com, matttbe@...nel.org,
 linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net] selftests: net: packetdrill: xfail all problems on
 slow machines

On Fri, 01 Aug 2025 17:00:35 -0400 Willem de Bruijn wrote:
> Jakub Kicinski wrote:
> > We keep seeing flakes on packetdrill on debug kernels, while
> > non-debug kernels are stable, not a single flake in 200 runs.
> > Time to give up, debug kernels appear to suffer from 10msec
> > latency spikes and any timing-sensitive test is bound to flake.
> > 
> > Signed-off-by: Jakub Kicinski <kuba@...nel.org>  
> 
> Reviewed-by: Willem de Bruijn <willemb@...gle.com>

I should have added "Willem was right" 'cause you suggested this 
a while back. But didn't know how to phrase it in the commit msg :)