cc-metric-collector/collectors/likwid/groups/zen2/L2.txt
2021-03-25 14:47:10 +01:00

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SHORT L2 cache bandwidth in MBytes/s (experimental)
EVENTSET
FIXC1 ACTUAL_CPU_CLOCK
FIXC2 MAX_CPU_CLOCK
PMC0 RETIRED_INSTRUCTIONS
PMC1 CPU_CLOCKS_UNHALTED
PMC3 REQUESTS_TO_L2_GRP1_ALL_NO_PF
METRICS
Runtime (RDTSC) [s] time
Runtime unhalted [s] FIXC1*inverseClock
Clock [MHz] 1.E-06*(FIXC1/FIXC2)/inverseClock
CPI PMC1/PMC0
L2D load bandwidth [MBytes/s] 1.0E-06*PMC3*64.0/time
L2D load data volume [GBytes] 1.0E-09*PMC3*64.0
L2 bandwidth [MBytes/s] 1.0E-06*(PMC3)*64.0/time
L2 data volume [GBytes] 1.0E-09*(PMC3)*64.0
LONG
Formulas:
L2D load bandwidth [MBytes/s] = 1.0E-06*REQUESTS_TO_L2_GRP1_ALL_NO_PF*64.0/time
L2D load data volume [GBytes] = 1.0E-09*REQUESTS_TO_L2_GRP1_ALL_NO_PF*64.0
L2 bandwidth [MBytes/s] = 1.0E-06*(REQUESTS_TO_L2_GRP1_ALL_NO_PF)*64/time
L2 data volume [GBytes] = 1.0E-09*(REQUESTS_TO_L2_GRP1_ALL_NO_PF)*64
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Profiling group to measure L2 cache bandwidth. There is no way to measure
the store traffic between L1 and L2.