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Date: Tue, 1 Sep 2015 15:35:18 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: Shaohua Li <shli@fb.com>
Cc: Thomas Gleixner <tglx@linutronix.de>, John Stultz <john.stultz@linaro.org>,
        lkml <linux-kernel@vger.kernel.org>,
        Prarit Bhargava <prarit@redhat.com>,
        Richard Cochran <richardcochran@gmail.com>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        "Ingo Molnar" <mingo@kernel.org>, Clark Williams <williams@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 8/9] clocksource: Improve unstable clocksource detection
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On Tue, 1 Sep 2015 11:14:17 -0700
Shaohua Li <shli@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.

-- Steve