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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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MBOX0C1 DRAM_READS
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MBOX0C2 DRAM_WRITES
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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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Memory load bandwidth [MBytes/s] 1.0E-06*MBOX0C1*64.0/time
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Memory load data volume [GBytes] 1.0E-09*MBOX0C1*64.0
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Memory evict bandwidth [MBytes/s] 1.0E-06*MBOX0C2*64.0/time
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Memory evict data volume [GBytes] 1.0E-09*MBOX0C2*64.0
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Memory bandwidth [MBytes/s] 1.0E-06*(MBOX0C1+MBOX0C2)*64.0/time
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Memory data volume [GBytes] 1.0E-09*(MBOX0C1+MBOX0C2)*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_ALL*64.0/time
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L3 load data volume [GBytes] = 1.0E-09*L2_LINES_IN_ALL*64.0
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L3 evict bandwidth [MBytes/s] = 1.0E-06*L2_TRANS_L2_WB*64.0/time
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L3 evict data volume [GBytes] = 1.0E-09*L2_TRANS_L2_WB*64.0
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L3 bandwidth [MBytes/s] = 1.0E-06*(L2_LINES_IN_ALL+L2_TRANS_L2_WB)*64/time
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L3 data volume [GBytes] = 1.0E-09*(L2_LINES_IN_ALL+L2_TRANS_L2_WB)*64
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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 cache line allocated in the L2 and the number of modified cache lines
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evicted from the L2. This group also output data volume transferred between the
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L3 and measured cores L2 caches. Note that this bandwidth also includes data
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transfers due to a write allocate load on a store miss in L2.
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