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https://github.com/ClusterCockpit/cc-metric-collector.git
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34 lines
1.2 KiB
Plaintext
34 lines
1.2 KiB
Plaintext
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SHORT L2 cache bandwidth in MBytes/s
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EVENTSET
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PMC0 PM_LD_REF_L1
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PMC1 PM_ST_CMPL
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PMC2 PM_LSU_L1_PREF
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PMC4 PM_RUN_INST_CMPL
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PMC5 PM_RUN_CYC
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METRICS
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Runtime (RDTSC) [s] time
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CPI PMC5/PMC4
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L2D load bandwidth [MBytes/s] 1.0E-06*((PMC0+PMC2)/2)*64.0/time
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L2D load data volume [GBytes] 1.0E-09*((PMC0+PMC2)/2)*64.0
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L2D store bandwidth [MBytes/s] 1.0E-06*((PMC1/2))*64.0/time
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L2D store data volume [GBytes] 1.0E-09*((PMC1/2))*64.0
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L2 bandwidth [MBytes/s] 1.0E-06*((PMC1+PMC0+PMC2)/2)*64.0/time
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L2 data volume [GBytes] 1.0E-09*((PMC1+PMC0+PMC2)/2)*64.0
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LONG
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Formulas:
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CPI = PM_RUN_CYC/PM_RUN_INST_CMPL
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L2D load bandwidth [MBytes/s] = 1.0E-06*(PM_DATA_FROM_L2/2)*128.0/time
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L2D load data volume [GBytes] = 1.0E-09*(PM_DATA_FROM_L2/2)*128.0
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L2D store bandwidth [MBytes/s] = 1.0E-06*(PM_ST_MISS_L1)*128.0/time
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L2D store data volume [GBytes] = 1.0E-09*(PM_ST_MISS_L1)*128.0
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L2 bandwidth [MBytes/s] = 1.0E-06*(PM_DATA_FROM_L2/2 + PM_ST_MISS_L1)*128.0/time
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L2 data volume [GBytes] = 1.0E-09*(PM_DATA_FROM_L2/2 + PM_ST_MISS_L1)*128.0
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-
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Profiling group to measure L2 cache bandwidth. The bandwidth is computed by the
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number of cacheline loaded from the L2 to the L1 data cache. There is currently no
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event to get the evicted data volume.
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