From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [RFC PATCH 0/2] net: threadable napi poll loop
Date: Tue, 10 May 2016 15:02:27 -0700
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Cc: Eric Dumazet <edumazet@google.com>,
	Hannes Frederic Sowa <hannes@stressinduktion.org>,
	Paolo Abeni <pabeni@redhat.com>,
	netdev <netdev@vger.kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Jiri Pirko <jiri@mellanox.com>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Alexei Starovoitov <ast@plumgrid.com>,
	Alexander Duyck <aduyck@mirantis.com>,
	Tom Herbert <tom@herbertland.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
To: Rik van Riel <riel@redhat.com>
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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:
> 
> > You might need another one of these in invoke_softirq()
> > 
> 
> Excellent.
> 
> I gave it a quick try (without your suggestion), and host seems to
> survive a stress test.
> 
> Of course we do have to fix these problems :
> 
> [  147.781629] NOHZ: local_softirq_pending 48
> [  147.785546] NOHZ: local_softirq_pending 48
> [  147.788344] NOHZ: local_softirq_pending 48
> [  147.788992] NOHZ: local_softirq_pending 48
> [  147.790943] NOHZ: local_softirq_pending 48
> [  147.791232] NOHZ: local_softirq_pending 24a
> [  147.791258] NOHZ: local_softirq_pending 48
> [  147.791366] NOHZ: local_softirq_pending 48
> [  147.792118] NOHZ: local_softirq_pending 48
> [  147.793428] NOHZ: local_softirq_pending 48


Well, with your suggestion, these warnings disappear ;)