cc-metric-collector/collectors/likwid/groups/arm8_n1/L3.txt
2021-03-25 14:47:10 +01:00

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SHORT L3 cache bandwidth in MBytes/s
EVENTSET
PMC0 INST_RETIRED
PMC1 CPU_CYCLES
PMC2 L2D_CACHE_REFILL
PMC3 L2D_CACHE_WB
METRICS
Runtime (RDTSC) [s] time
CPI PMC1/PMC0
L3 read bandwidth [MBytes/s] 1.0E-06*(PMC2)*64.0/time
L3 read data volume [GBytes] 1.0E-09*(PMC2)*64.0
L3 write bandwidth [MBytes/s] 1.0E-06*(PMC3)*64.0/time
L3 write data volume [GBytes] 1.0E-09*(PMC3)*64.0
L3 bandwidth [MBytes/s] 1.0E-06*(PMC2+PMC3)*64.0/time
L3 data volume [GBytes] 1.0E-09*(PMC2+PMC3)*64.0
LONG
Formulas:
L3 read bandwidth [MBytes/s] = 1.0E-06*(L2D_CACHE_REFILL)*64.0/runtime
L3 read data volume [GBytes] = 1.0E-09*(L2D_CACHE_REFILL)*64.0
L3 write bandwidth [MBytes/s] = 1.0E-06*(L2D_CACHE_WB)*64.0/runtime
L3 write data volume [GBytes] = 1.0E-09*(L2D_CACHE_WB)*64.0
L3 bandwidth [MBytes/s] = 1.0E-06*(L2D_CACHE_REFILL+L2D_CACHE_WB)*64.0/runtime
L3 data volume [GBytes] = 1.0E-09*(L2D_CACHE_REFILL+L2D_CACHE_WB)*64.0
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Profiling group to measure traffic between L2 and L3 cache.