SHORT QPI Link Layer data EVENTSET FIXC0 INSTR_RETIRED_ANY FIXC1 CPU_CLK_UNHALTED_CORE FIXC2 CPU_CLK_UNHALTED_REF SBOX0C0 DIRECT2CORE_SUCCESS_RBT_HIT SBOX1C0 DIRECT2CORE_SUCCESS_RBT_HIT SBOX2C0 DIRECT2CORE_SUCCESS_RBT_HIT SBOX0C1 TXL_FLITS_G0_DATA SBOX1C1 TXL_FLITS_G0_DATA SBOX2C1 TXL_FLITS_G0_DATA SBOX0C2 TXL_FLITS_G0_NON_DATA SBOX1C2 TXL_FLITS_G0_NON_DATA SBOX2C2 TXL_FLITS_G0_NON_DATA SBOX0C3 SBOX_CLOCKTICKS SBOX1C3 SBOX_CLOCKTICKS SBOX2C3 SBOX_CLOCKTICKS SBOX0FIX QPI_RATE SBOX1FIX QPI_RATE SBOX2FIX QPI_RATE METRICS Runtime (RDTSC) [s] time Runtime unhalted [s] FIXC1*inverseClock Clock [MHz] 1.E-06*(FIXC1/FIXC2)/inverseClock CPI FIXC1/FIXC0 QPI Speed Link 0 [GT/s] ((SBOX0C3)/time)*inverseClock*(8/1000) QPI Speed Link 1 [GT/s] ((SBOX1C3)/time)*inverseClock*(8/1000) QPI Speed Link 2 [GT/s] ((SBOX2C3)/time)*inverseClock*(8/1000) QPI Rate Link 0 [GT/s] 1.E-09*SBOX0FIX QPI Rate Link 1 [GT/s] 1.E-09*SBOX1FIX QPI Rate Link 2 [GT/s] 1.E-09*SBOX2FIX data from QPI to LLC [MByte] 1.E-06*(SBOX0C0+SBOX1C0+SBOX2C0)*8 QPI data volume [MByte] 1.E-06*(SBOX0C1+SBOX1C1+SBOX2C1)*8 QPI data bandwidth [MByte/s] 1.E-06*(SBOX0C1+SBOX1C1+SBOX2C1)*8/time QPI link volume [MByte] 1.E-06*(SBOX0C1+SBOX1C1+SBOX2C1+SBOX0C2+SBOX1C2+SBOX2C2)*8 QPI link bandwidth [MByte/s] 1.E-06*(SBOX0C1+SBOX1C1+SBOX2C1+SBOX0C2+SBOX1C2+SBOX2C2)*8/time LONG Formulas: QPI Speed Link 0/1/2 [GT/s] = ((SBOX_CLOCKTICKS)/time)*clock*(8/1000) QPI Rate Link 0/1/2 [GT/s] = 1.E-09*(QPI_RATE) data from QPI to LLC [MByte] = 1.E-06*(sum(DIRECT2CORE_SUCCESS_RBT_HIT)*64) QPI data volume [MByte] = 1.E-06*(sum(TXL_FLITS_G0_DATA)*8) QPI data bandwidth [MByte/s] = 1.E-06*(sum(TXL_FLITS_G0_DATA)*8)/runtime QPI link volume [MByte] = 1.E-06*((sum(TXL_FLITS_G0_DATA)+sum(TXL_FLITS_G0_NON_DATA))*8) QPI link bandwidth [MByte/s] = 1.E-06*((sum(TXL_FLITS_G0_DATA)+sum(TXL_FLITS_G0_NON_DATA))*8)/runtime -- The Intel QPI Link Layer is responsible for packetizing requests from the caching agent (CBOXes) on the way out to the system interface.