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28 lines
1.0 KiB
Plaintext
28 lines
1.0 KiB
Plaintext
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SHORT Bandwidth on the Hypertransport links
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EVENTSET
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PMC0 CPU_TO_DRAM_LOCAL_TO_0
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PMC1 CPU_TO_DRAM_LOCAL_TO_1
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PMC2 CPU_TO_DRAM_LOCAL_TO_2
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PMC3 CPU_TO_DRAM_LOCAL_TO_3
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METRICS
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Runtime (RDTSC) [s] time
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Hyper Transport link0 bandwidth [MBytes/s] 1.0E-06*PMC0*4.0/time
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Hyper Transport link1 bandwidth [MBytes/s] 1.0E-06*PMC1*4.0/time
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Hyper Transport link2 bandwidth [MBytes/s] 1.0E-06*PMC2*4.0/time
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Hyper Transport link3 bandwidth [MBytes/s] 1.0E-06*PMC3*4.0/time
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LONG
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Formulas:
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Hyper Transport link0 bandwidth [MBytes/s] = 1.0E-06*CPU_TO_DRAM_LOCAL_TO_0*4.0/time
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Hyper Transport link1 bandwidth [MBytes/s] = 1.0E-06*CPU_TO_DRAM_LOCAL_TO_1*4.0/time
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Hyper Transport link2 bandwidth [MBytes/s] = 1.0E-06*CPU_TO_DRAM_LOCAL_TO_2*4.0/time
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Hyper Transport link3 bandwidth [MBytes/s] = 1.0E-06*CPU_TO_DRAM_LOCAL_TO_3*4.0/time
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-
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Profiling group to measure the bandwidth over the Hypertransport links. Can be used
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to detect NUMA problems. Usually there should be only limited traffic over the QPI
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links for optimal performance.
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