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

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SHORT UOPs retirement
EVENTSET
FIXC0 INSTR_RETIRED_ANY
FIXC1 CPU_CLK_UNHALTED_CORE
FIXC2 CPU_CLK_UNHALTED_REF
PMC0 UOPS_RETIRED_USED_CYCLES
PMC1 UOPS_RETIRED_STALL_CYCLES
PMC2 CPU_CLOCK_UNHALTED_TOTAL_CYCLES
PMC3:EDGEDETECT UOPS_RETIRED_STALL_CYCLES
METRICS
Runtime (RDTSC) [s] time
Runtime unhalted [s] FIXC1*inverseClock
Clock [MHz] 1.E-06*(FIXC1/FIXC2)/inverseClock
CPI FIXC1/FIXC0
Used cycles ratio [%] 100*PMC0/PMC2
Unused cycles ratio [%] 100*PMC1/PMC2
Avg stall duration [cycles] PMC1/PMC3:EDGEDETECT
LONG
Formulas:
Used cycles ratio [%] = 100*UOPS_RETIRED_USED_CYCLES/CPU_CLK_UNHALTED_CORE
Unused cycles ratio [%] = 100*UOPS_RETIRED_STALL_CYCLES/CPU_CLK_UNHALTED_CORE
Avg stall duration [cycles] = UOPS_RETIRED_STALL_CYCLES/UOPS_RETIRED_STALL_CYCLES:EDGEDETECT
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This performance group returns the ratios of used and unused cycles regarding
the retirement stage in the pipeline (re-order buffer). Used cycles are all
cycles where uOPs are retired while unused cycles refer to pipeline stalls.
Moreover, the group calculates the average stall duration in cycles.