On 28/02/14 14:42, Andi Kleen wrote:
Muthusamy <muthu9...@yahoo.com> writes:
perf version 3.12.11
[root@rafa tmp]# ./perf stat -e r100b pwd ### (I have tried with
other data intensive programs too)
I don't think r100b is a valid event on Westmere. Not sure where you got
that from. As others pointed out you need to use perf mem record/report
with sampling (but note that it reports use-latency, not load-latency)
-Andi
Andi,
what do you mean by use-latency here? I understood that PEBS was able
to report the number of core cycles that the load took to from some part
of the memory hierarchy until it reached the CPU.
Thank you.
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