linux-kernel - Re: [PATCH net-next 0/3] selftests: openvswitch: Address some flakes in the CI environment

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Message-ID: <CAG=2xmMDm-AuTZVAC3WwXsax1z_NSx9kYXG37q8EAnZMdk3BNA@mail.gmail.com>
Date: Fri, 5 Jul 2024 14:01:23 +0000
From: Adrián Moreno <amorenoz@...hat.com>
To: Aaron Conole <aconole@...hat.com>
Cc: Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org, dev@...nvswitch.org, 
	linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Pravin B Shelar <pshelar@....org>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Shuah Khan <shuah@...nel.org>, 
	Simon Horman <horms@...nel.org>
Subject: Re: [PATCH net-next 0/3] selftests: openvswitch: Address some flakes
 in the CI environment

On Fri, Jul 05, 2024 at 09:49:12AM GMT, Aaron Conole wrote:
> Jakub Kicinski <kuba@...nel.org> writes:
>
> > On Tue,  2 Jul 2024 09:28:27 -0400 Aaron Conole wrote:
> >> These patches aim to make using the openvswitch testsuite more reliable.
> >> These should address the major sources of flakiness in the openvswitch
> >> test suite allowing the CI infrastructure to exercise the openvswitch
> >> module for patch series.  There should be no change for users who simply
> >> run the tests (except that patch 3/3 does make some of the debugging a bit
> >> easier by making some output more verbose).
> >
> > Hi Aaron!
> >
> > The results look solid on normal builds now, but with a debug kernel
> > the test is failing consistently:
> >
> > https://netdev.bots.linux.dev/contest.html?executor=vmksft-net-dbg&test=openvswitch-sh
>
> Yes - it shows a test case issue with the upcall and psample tests.
>
> Adrian and I discussed the correct approach would be using a wait_for
> instead of just sleeping, because it seems the dbg environment might be
> too racy.  I think he is working on a follow up to submit after the
> psample work gets merged - we were hoping not to hold that patch series
> up with more potential conflicts or merge issues if that's okay.
>

Yes. I am working on a patch to solve the failures in slow systems.

Thanks.
Adrián