On Tue, Sep 01, 2015 at 03:35:18PM -0400, Steven Rostedt wrote: > On Tue, 1 Sep 2015 11:14:17 -0700 > Shaohua Li <s...@fb.com> wrote: > > > > You think that blocking softirq execution for 42.9 seconds is normal? > > > Seems we are living in a different universe. > > > > I don't say it's normal. I say it's not hard to trigger. > > > > > > it's just VM off. A softirq can hog the cpu. > > > > > Please provide a test case that shows the softirq hogging the cpu for > over 40 seconds.
Do not overlook the MAX_SOFTIRQ_* logic while you're there trying to explain this ;-) A softirq running significantly longer than 2 jiffies and not falling back to ksoftirq is a plain bug. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/