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Subject: Re: [RFC PATCH 0/2] net: threadable napi poll loop
From: Rik van Riel <riel@redhat.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>,
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Date: Tue, 10 May 2016 18:02:33 -0400
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On Tue, 2016-05-10 at 14:53 -0700, Eric Dumazet wrote:
> On Tue, 2016-05-10 at 17:35 -0400, Rik van Riel wrote:
>=20
> >=20
> > You might need another one of these in invoke_softirq()
> >=20
> Excellent.
>=20
> I gave it a quick try (without your suggestion), and host seems to
> survive a stress test.
>=20
> Of course we do have to fix these problems :
>=20
> [=C2=A0=C2=A0147.781629] NOHZ: local_softirq_pending 48
> [=C2=A0=C2=A0147.785546] NOHZ: local_softirq_pending 48
> [=C2=A0=C2=A0147.788344] NOHZ: local_softirq_pending 48
> [=C2=A0=C2=A0147.788992] NOHZ: local_softirq_pending 48
> [=C2=A0=C2=A0147.790943] NOHZ: local_softirq_pending 48
> [=C2=A0=C2=A0147.791232] NOHZ: local_softirq_pending 24a
> [=C2=A0=C2=A0147.791258] NOHZ: local_softirq_pending 48
> [=C2=A0=C2=A0147.791366] NOHZ: local_softirq_pending 48
> [=C2=A0=C2=A0147.792118] NOHZ: local_softirq_pending 48
> [=C2=A0=C2=A0147.793428] NOHZ: local_softirq_pending 48

As long as ksoftirqd is running, that should not be
an actual problem, just a false positive.

--=20
All Rights Reversed.


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