$ uname -a Linux lx-pc.odysseo 4.2.3-300.fc23.x86_64 #1 SMP Mon Oct 5 15:42:54 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux $ lsmod |egrep 'pax|sep3_15|vtsspp' vtsspp 360448 0 sep3_15 561152 0 pax 16384 0 $ /opt/intel/vtune_amplifier_xe/bin64/amplxe-cl -collect advanced-hotspots -knob collection-detail=stack-and-callcount -- dd if=/dev/zero of=/dev/null bs=512 count=10000k amplxe: Collection started. To stop the collection, either press CTRL-C or enter from another console window: amplxe-cl -r /home/dclaude/r000ah -command stop. amplxe: Warning: To enable hardware event-base[d] sampling, VTune Amplifier has disabled the NMI watchdog timer. The watchdog timer will be re-enabled after collection completes. 10240000+0 records in 10240000+0 records out 5242880000 bytes (5.2 GB) copied, 2.97155 s, 1.8 GB/s ... Event summary ------------- Hardware Event Type Hardware Event Count:Self Hardware Event Sample Count:Self Events Per Sample -------------------------- ------------------------- -------------------------------- ----------------- INST_RETIRED.ANY 13442731417 3076 3300000 CPU_CLK_UNHALTED.THREAD 8460467005 2699 3300000 CPU_CLK_UNHALTED.REF_TSC 7848200250 2643 3300000 BR_INST_RETIRED.NEAR_TAKEN 261404449 1307 200003 CALL_COUNT 47745325 34188 1 amplxe: Executing actions 100 % done $ dmesg [ 1249.837256] vtss_cmd_start[cpu8]: Starting vtss++ collection [ 1249.845406] vtss_pebs_init[cpu8]: PEBS: size=0xC0, mask=0xF, family = 6, model = 3f [ 1252.953421] vtss_collection_fini[cpu3]: vtss++ collection stopped 0 [ 1252.954069] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter. [ 1252.954935] vtss_transport_fini[cpu0]: Transport stopped.