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50 lines
2.5 KiB
Plaintext
50 lines
2.5 KiB
Plaintext
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SHORT QPI Link Layer data
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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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QBOX0C0 RXL_FLITS_G0_DATA
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QBOX1C0 RXL_FLITS_G0_DATA
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QBOX0C1 RXL_FLITS_G0_NON_DATA
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QBOX1C1 RXL_FLITS_G0_NON_DATA
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QBOX0C2 TXL_FLITS_G0_DATA
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QBOX1C2 TXL_FLITS_G0_DATA
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QBOX0C3 TXL_FLITS_G0_NON_DATA
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QBOX1C3 TXL_FLITS_G0_NON_DATA
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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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QPI send data volume [GByte] 1.E-09*(QBOX0C2+QBOX1C2)*8
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QPI send data bandwidth [MByte/s] 1.E-06*(QBOX0C2+QBOX1C2)*8/time
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QPI send link volume [GByte] 1.E-09*(QBOX0C2+QBOX1C2+QBOX0C3+QBOX1C3)*8
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QPI send link bandwidth [MByte/s] 1.E-06*(QBOX0C2+QBOX1C2+QBOX0C3+QBOX1C3)*8/time
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QPI receive data volume [GByte] 1.E-09*(QBOX0C0+QBOX1C0)*8
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QPI receive data bandwidth [MByte/s] 1.E-06*(QBOX0C0+QBOX1C0)*8/time
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QPI receive link volume [GByte] 1.E-09*(QBOX0C0+QBOX1C0+QBOX0C1+QBOX1C1)*8
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QPI receive link bandwidth [MByte/s] 1.E-06*(QBOX0C0+QBOX1C0+QBOX0C1+QBOX1C1)*8/time
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QPI total transfer volume [GByte] 1.E-09*(QBOX0C0+QBOX1C0+QBOX0C2+QBOX1C2+QBOX0C1+QBOX1C1+QBOX0C3+QBOX1C3)*8
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QPI total bandwidth [MByte/s] 1.E-06*(QBOX0C0+QBOX1C0+QBOX0C2+QBOX1C2+QBOX0C1+QBOX1C1+QBOX0C3+QBOX1C3)*8/time
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LONG
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Formulas:
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QPI send data volume [GByte] = 1.E-09*(sum(TXL_FLITS_G0_DATA)*8)
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QPI send data bandwidth [MByte/s] = 1.E-06*(sum(TXL_FLITS_G0_DATA)*8)/runtime
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QPI send link volume [GByte] = 1.E-09*((sum(TXL_FLITS_G0_DATA)+sum(TXL_FLITS_G0_NON_DATA))*8)
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QPI send link bandwidth [MByte/s] = 1.E-06*((sum(TXL_FLITS_G0_DATA)+sum(TXL_FLITS_G0_NON_DATA))*8)/runtime
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QPI receive data volume [GByte] = 1.E-09*(sum(RXL_FLITS_G0_DATA)*8)
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QPI receive data bandwidth [MByte/s] = 1.E-06*(sum(RXL_FLITS_G0_DATA)*8)/runtime
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QPI receive link volume [GByte] = 1.E-09*((sum(RXL_FLITS_G0_DATA)+sum(RXL_FLITS_G0_NON_DATA))*8)
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QPI receive link bandwidth [MByte/s] = 1.E-06*((sum(RXL_FLITS_G0_DATA)+sum(RXL_FLITS_G0_NON_DATA))*8)/runtime
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QPI total transfer volume [GByte] = 1.E-09*(sum(TXL_FLITS_G0_DATA)+sum(TXL_FLITS_G0_NON_DATA)+sum(RXL_FLITS_G0_DATA)+sum(RXL_FLITS_G0_NON_DATA))*8
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QPI total bandwidth [MByte/s] = 1.E-06*(sum(TXL_FLITS_G0_DATA)+sum(TXL_FLITS_G0_NON_DATA)+sum(RXL_FLITS_G0_DATA)+sum(RXL_FLITS_G0_NON_DATA))*8/time
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--
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The Intel QPI Link Layer is responsible for packetizing requests from the caching agent (CBOXes)
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on the way out to the system interface. For Broadwell EP systems, the Link Layer and the
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Ring interface is separated. The QPI link volume contains header, data and trailer while the
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QPI data volume counts only the data flits.
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