Messages in this thread | | | Date | Thu, 18 Dec 2008 22:16:37 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH v2] tracing/function-graph-tracer: prevent from hrtimer interrupt infinite loop |
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* Frédéric Weisbecker <fweisbec@gmail.com> wrote:
> Hmm. No, I just tested by setting 1000 HZ and disabled NOHZ, the system > doesn't lockup unless I turn on the function graph tracer.
but that's what we are interested in: the system locks up with HZ=1000 and with the tracer on - right?
Which means that it's not some hrtimer problem, but simply the traced timer tick takes more than 1 millisecond to execute under this virtualization.
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