Perf event setup failed

I was trying to use operf using the 
br_misp_retired:400009:all_branches_pebs event on a machine with Haswell 
processor.

I can run count with this event to get counters just fine.

However, when I try to use it with operf, I get this error:

operf -c -e br_misp_retired:400009:all_branches_pebs -d outdir -s
perf_event_open failed with Operation not supported
Caught runtime_error: Internal Error.  Perf event setup failed.
Error running profiler

Any ideas why?

I am using a version of operf 1.0.0 that we compile ourselves.

Thanks.



Mike Accola 
IBM InfoSphere Streams 
IBM Analytics

Phone: 720-349-3409 
E-mail: [email protected]

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