SHORT QPI Link Layer data

EVENTSET
FIXC0 INSTR_RETIRED_ANY
FIXC1 CPU_CLK_UNHALTED_CORE
FIXC2 CPU_CLK_UNHALTED_REF
QBOX0C0 RXL_FLITS_G0_DATA
QBOX1C0 RXL_FLITS_G0_DATA
QBOX0C1 RXL_FLITS_G0_NON_DATA
QBOX1C1 RXL_FLITS_G0_NON_DATA
QBOX0C2 TXL_FLITS_G0_DATA
QBOX1C2 TXL_FLITS_G0_DATA
QBOX0C3 TXL_FLITS_G0_NON_DATA
QBOX1C3 TXL_FLITS_G0_NON_DATA


METRICS
Runtime (RDTSC) [s] time
Runtime unhalted [s] FIXC1*inverseClock
Clock [MHz]  1.E-06*(FIXC1/FIXC2)/inverseClock
CPI  FIXC1/FIXC0
QPI send data volume [GByte] 1.E-09*(QBOX0C2+QBOX1C2)*8
QPI send data bandwidth [MByte/s] 1.E-06*(QBOX0C2+QBOX1C2)*8/time
QPI send link volume [GByte] 1.E-09*(QBOX0C2+QBOX1C2+QBOX0C3+QBOX1C3)*8
QPI send link bandwidth [MByte/s] 1.E-06*(QBOX0C2+QBOX1C2+QBOX0C3+QBOX1C3)*8/time
QPI receive data volume [GByte] 1.E-09*(QBOX0C0+QBOX1C0)*8
QPI receive data bandwidth [MByte/s] 1.E-06*(QBOX0C0+QBOX1C0)*8/time
QPI receive link volume [GByte] 1.E-09*(QBOX0C0+QBOX1C0+QBOX0C1+QBOX1C1)*8
QPI receive link bandwidth [MByte/s] 1.E-06*(QBOX0C0+QBOX1C0+QBOX0C1+QBOX1C1)*8/time
QPI total transfer volume [GByte] 1.E-09*(QBOX0C0+QBOX1C0+QBOX0C2+QBOX1C2+QBOX0C1+QBOX1C1+QBOX0C3+QBOX1C3)*8
QPI total bandwidth [MByte/s] 1.E-06*(QBOX0C0+QBOX1C0+QBOX0C2+QBOX1C2+QBOX0C1+QBOX1C1+QBOX0C3+QBOX1C3)*8/time

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