cc-metric-collector/collectors/likwid/groups/power9/USEFUL.txt
2021-03-25 14:47:10 +01:00

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SHORT Rate of useful instructions
EVENTSET
PMC0 PM_RUN_SPURR
PMC1 PM_INST_DISP
PMC3 PM_RUN_PURR
PMC4 PM_RUN_INST_CMPL
PMC5 PM_RUN_CYC
METRICS
CPI PMC5/PMC4
Useful instr. rate [%] (PMC4/PMC1)*100.0
Processor Utilization [%] (PMC0/PMC3)*100.0
LONG
Formulas:
Useful instr. rate [%] = (PM_RUN_INST_CMPL/PM_INST_DISP)*100
Processor Utilization [%] = (PM_RUN_SPURR/PM_RUN_PURR)*100
--
This performance group shows the overhead of speculative
execution of instructions and the processor utilization.