Messages in this thread | | | Date | Mon, 30 Mar 2015 21:33:18 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH] perf, record: Add clockid parameter |
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On Mon, Mar 30, 2015 at 11:24:12AM -0600, David Ahern wrote: > This works but the result is not always intuitive as to why it failed. > > On a kernel that does not support the clock id you get: > $ perf sched record -k mono -- sleep 1 > Error: > clockid not supported. > > And on a kernel that supports clockid but not for NMI: > > $ perf record -k realtime -a -- sleep 1 > Error: > clockid not supported. > > --> H/W counters so realtime is not allowed > > Same message though different root causes.
Heh, ok I can fudge that :-)
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