cc-metric-collector/collectors/likwid/groups/zen2/L3.txt
2021-03-25 14:47:10 +01:00

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SHORT L3 cache bandwidth in MBytes/s
EVENTSET
FIXC1 ACTUAL_CPU_CLOCK
FIXC2 MAX_CPU_CLOCK
PMC0 RETIRED_INSTRUCTIONS
PMC1 CPU_CLOCKS_UNHALTED
CPMC0 L3_ACCESS
CPMC1 L3_MISS
METRICS
Runtime (RDTSC) [s] time
Runtime unhalted [s] FIXC1*inverseClock
Clock [MHz] 1.E-06*(FIXC1/FIXC2)/inverseClock
CPI PMC1/PMC0
L3 access bandwidth [MBytes/s] 1.0E-06*CPMC0*64.0/time
L3 access data volume [GBytes] 1.0E-09*CPMC0*64.0
L3 access rate [%] (CPMC0/PMC0)*100.0
L3 miss rate [%] (CPMC1/PMC0)*100.0
L3 miss ratio [%] (CPMC1/CPMC0)*100.0
LONG
Formulas:
L3 access bandwidth [MBytes/s] = 1.0E-06*L3_ACCESS*64.0/time
L3 access data volume [GBytes] = 1.0E-09*L3_ACCESS*64.0
L3 access rate [%] = (L3_ACCESS/RETIRED_INSTRUCTIONS)*100
L3 miss rate [%] = (L3_MISS/RETIRED_INSTRUCTIONS)*100
L3 miss ratio [%]= (L3_MISS/L3_ACCESS)*100
-
Profiling group to measure L3 cache bandwidth. There is no way to measure
the store traffic between L2 and L3. The only two published L3 events are
L3_ACCESS and L3_MISS.