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Date: Wed, 26 Nov 2025 17:41:44 -0800
From: Jakub Kicinski <kuba@kernel.org>
To: Hangbin Liu <liuhangbin@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: [TEST] bond_macvlan_ipvlan.sh flakiness
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On Thu, 27 Nov 2025 01:18:30 +0000 Hangbin Liu wrote:
> On Thu, Nov 27, 2025 at 01:15:00AM +0000, Hangbin Liu wrote:
> > > Hi Hangbin!
> > >=20
> > > The 0.25 sec sleep was added locally 1 week ago and 0 flakes since.
> > > Would you mind submitting it officially? =20
> >=20
> > Good to hear this. I will submit it. =20
>=20
> Oh, I pressed the send button too fast. I forgot to ask=E2=80=94should we=
 keep it at
> 0.25s or extend it to 0.5s to avoid flaky tests later?

I'd stick to 0.25sec since it was solid for a week.
I don't think the race window is very large, we could even experiment
with a smaller delay, because debug kernels don't hit the issue. The
debug kernel can't be >0.1sec slower I reckon.

IOW I hope 0.25sec already has pretty solid safety margin?
As I mentioned last week - this is called almost 100 times by the test
so the longer delays will be quite visible in the test runtime.