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https://github.com/ClusterCockpit/cc-metric-collector.git
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32 lines
1.1 KiB
Plaintext
32 lines
1.1 KiB
Plaintext
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SHORT L3 cache bandwidth in MBytes/s
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EVENTSET
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PMC0 PM_L3_LD_PREF
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PMC3 PM_DATA_FROM_L3
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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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L3D load bandwidth [MBytes/s] 1.0E-06*(PMC3+(PMC0-PMC3))*128.0/time
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L3D load data volume [GBytes] 1.0E-09*(PMC3+(PMC0-PMC3))*128.0
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L3 bandwidth [MBytes/s] 1.0E-06*(PMC3+(PMC0-PMC3))*128.0/time
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L3 data volume [GBytes] 1.0E-09*(PMC3+(PMC0-PMC3))*128.0
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Loads from local L3 per cycle 100.0*(PMC3+(PMC0-PMC3))/PMC5
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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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L3D load bandwidth [MBytes/s] = 1.0E-06*(PM_DATA_FROM_L3)*128.0/time
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L3D load data volume [GBytes] = 1.0E-09*(PM_DATA_FROM_L3)*128.0
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L3D evict bandwidth [MBytes/s] = 1.0E-06*(PM_L2_CASTOUT_MOD)*128.0/time
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L3D evict data volume [GBytes] = 1.0E-09*(PM_L2_CASTOUT_MOD)*128.0
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L3 bandwidth [MBytes/s] = 1.0E-06*(PM_DATA_FROM_L3+PM_L2_CASTOUT_MOD)*128.0/time
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L3 data volume [GBytes] = 1.0E-09*(PM_DATA_FROM_L3+PM_L2_CASTOUT_MOD)*128.0
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-
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Profiling group to measure L3 cache bandwidth. The bandwidth is computed by the
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number of cacheline loaded from the L3 to the L2 data cache. There is currently no
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event to get the evicted data volume.
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