Messages in this thread | | | Subject | Re: NOHZ: local_softirq_pending 08 | From | Eric Dumazet <> | Date | Thu, 31 May 2012 09:56:25 +0200 |
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On Thu, 2012-05-31 at 09:52 +0200, Thomas Gleixner wrote: > Dave, > > On Wed, 30 May 2012, Dave Jones wrote: > > > May 30 17:43:04 [ 1095.335659] NOHZ: local_softirq_pending 08 > > > > According to git, you ratelimited this back in 2007 with the message > > "until we found the root cause of that problem." > > > > Is this an old problem that has returned ? > > Looks like. > > > Maybe interesting note: Both machines I see this on regularly are Atom cpus, > > and it's always '08'. > > So it goes idle with NET_RX softirq pending. That really should not > happen. I fear you need to fire up the tracer :)
It might be a bug in the network driver, a race with NAPI completion.
Dave, which net drivers run on these machines ?
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