Messages in this thread | | | Subject | Re: [PATCH 3/6] perf: Add timestamp to COMM and MMAP events | From | Peter Zijlstra <> | Date | Mon, 29 Nov 2010 12:54:50 +0100 |
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On Mon, 2010-11-29 at 17:06 +1100, Ian Munsie wrote: > > > This goes away if PERF_SAMPLE_CPU is added to the mix so that the > timestamps are offset from the first event of *their* CPU, otherwise > time-epoch can go negative, as it has done here.
How does that happen, I though the power7 sched_clock() was fully synchronized and monotonic across all cores?
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