Messages in this thread | | | Date | Tue, 11 Aug 2009 17:40:06 +0200 | From | Johannes Stezenbach <> | Subject | Re: 2.6.31-rc5 regression: x86 MCE malfunction on Thinkpad T42p |
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On Tue, Aug 11, 2009 at 12:13:07AM +0200, Johannes Stezenbach wrote: > On Mon, Aug 10, 2009 at 11:31:33PM +0200, Ingo Molnar wrote: > > * Johannes Stezenbach <js@sig21.net> wrote: > > > > > > Could the warning be caused by the cpufreq ondemand governor? ISTR > > > that one should switch to the performance governor before doing > > > any profiling, but I forgot for this test. > > > > there might be a connection - it could in theory cause sched_clock() > > transients and confuse the ring-buffer time-stamping. > > I'll try tomorrow after a fresh boot if the warning also appears > with the performance governor.
Nope, cpufreq was not the culprit. The "Delta way too big!" warning in rb_reserve_next_event() happens after suspend-to-RAM.
Johannes
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