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The SEP drivers weren't built and weren't installed:

hekto@ubuntu:/opt/intel/vtune_amplifier_xe/sepdk/src$ sudo ./insmod-sep -q
pax driver is not loaded.
socperf2_0 driver is not loaded.
sep4_0 driver is not loaded.
vtsspp driver is not loaded.

The Perf tool also wasn't built correctly (the kernel is customized one):

hekto@ubuntu:/opt/intel/vtune_amplifier_xe/sepdk/src$ perf -v
WARNING: perf not found for kernel 3.18.41-test

But - the VTune actually works, I can see profiling results. What kind of sampling is being used in this case? I don't see anything about that in the VTune GUI.

HEKTO
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1 Answers1

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It uses user mode sampling by injecting into the app and setting profiling timers for each thread and then capturing IP and stack in signal handlers. see more https://software.intel.com/en-us/node/544072

acid-art
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