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https://github.com/ClusterCockpit/cc-metric-collector.git
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37 lines
1.4 KiB
Plaintext
37 lines
1.4 KiB
Plaintext
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SHORT L3 cache bandwidth in MBytes/s
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EVENTSET
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FIXC0 INSTR_RETIRED_ANY
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FIXC1 CPU_CLK_UNHALTED_CORE
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FIXC2 CPU_CLK_UNHALTED_REF
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PMC0 L2_LINES_IN_ANY
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PMC1 L2_LINES_OUT_DEMAND_DIRTY
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METRICS
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Runtime (RDTSC) [s] time
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Runtime unhalted [s] FIXC1*inverseClock
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Clock [MHz] 1.E-06*(FIXC1/FIXC2)/inverseClock
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CPI FIXC1/FIXC0
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L3 load bandwidth [MBytes/s] 1.0E-06*PMC0*64.0/time
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L3 load data volume [GBytes] 1.0E-09*PMC0*64.0
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L3 evict bandwidth [MBytes/s] 1.0E-06*PMC1*64.0/time
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L3 evict data volume [GBytes] 1.0E-09*PMC1*64.0
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L3 bandwidth [MBytes/s] 1.0E-06*(PMC0+PMC1)*64.0/time
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L3 data volume [GBytes] 1.0E-09*(PMC0+PMC1)*64.0
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LONG
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Formulas:
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L3 load bandwidth [MBytes/s] = 1.0E-06*L2_LINES_IN_ANY*64.0/time
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L3 load data volume [GBytes] = 1.0E-09*L2_LINES_IN_ANY*64.0
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L3 evict bandwidth [MBytes/s] = 1.0E-06*L2_LINES_OUT_DEMAND_DIRTY*64.0/time
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L3 evict data volume [GBytes] = 1.0E-09*L2_LINES_OUT_DEMAND_DIRTY*64.0
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L3 bandwidth [MBytes/s] = 1.0E-06*(L2_LINES_IN_ANY+L2_LINES_OUT_DEMAND_DIRTY)*64/time
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L3 data volume [GBytes] = 1.0E-09*(L2_LINES_IN_ANY+L2_LINES_OUT_DEMAND_DIRTY)*64
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-
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Profiling group to measure L3 cache bandwidth. The bandwidth is
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computed by the number of cache line allocated in the L2 and the number of
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modified cache lines evicted from the L2. Also reporto data volume transferred
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between L3 and L2 caches. Note that this bandwidth also includes data transfers
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due to a write allocate load on a store miss in L2.
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