Uncore Manual

Reference Number: 329468-002 141
Uncore Performance Monitoring
Intel® QPI Link Layer Performance Monitoring
2.8.6 QPI LL Box Common Metrics (Derived Events)
The following table summarizes metrics commonly calculated from QPI LL Box events.
TxR_AK_NDR_CREDIT_ACQUIRED 0x29 0-3 1 1 R3QPI Egress Credit Occupancy
- AK NDR
TxR_BL_DRS_CREDIT_ACQUIRED 0x2a 0-3 1 1 R3QPI Egress Credit Occupancy
- DRS
TxR_BL_NCB_CREDIT_ACQUIRED 0x2b 0-3 1 1 R3QPI Egress Credit Occupancy
- NCB
TxR_BL_NCS_CREDIT_ACQUIRED 0x2c 0-3 1 1 R3QPI Egress Credit Occupancy
- NCS
CTO_COUNT 0x38 0-3 1 2 Count of CTO Events
RxL_CREDITS_CONSUMED_VN1 0x39 0-3 1 2 VN1 Credit Consumed
Symbol Name:
Definition
Equation
DATA_FROM_QPI:
Data received from QPI in bytes ( = DRS +
NCB Data messages received from QPI)
DRS_DATA_MSGS_FROM_QPI +
NCB_DATA_MSGS_FROM_QPI
DATA_FROM_QPI_TO_HA_OR_IIO:
Data received from QPI forwarded to HA or
IIO. Expressed in Bytes
DATA_FROM_QPI - DATA_FROM_QPI_TO_LLC
DATA_FROM_QPI_TO_LLC:
Data received from QPI forwarded to LLC.
Expressed in Bytes
DIRECT2CORE.SUCCESS * 64
DATA_FROM_QPI_TO_NODEx:
Data packets received from QPI sent to
Node ID 'x'. Expressed in bytes
DRS_DataC_FROM_QPI_TO_NODEx +
DRS_WRITE_FROM_QPI_TO_NODEx +
NCB_DATA_FROM_QPI_TO_NODEx
DRS_DATA_MSGS_FROM_QPI:
DRS Data Messages From QPI in bytes
(RxL_FLITS_G1.DRS_DATA * 8)
DRS_DataC_FROM_QPI_TO_NODEx:
DRS DataC packets received from QPI sent
to Node ID 'x'. Expressed in bytes
(CTO_COUNT
with:{Q_Py_PCI_PMON_PKT_z_MATCH0{[12:0],dnid}={0
x1C00,x},
Q_Py_PCI_PMON_PKT_z_MASK0[17:0]=0x3FF80}) * 64
DRS_DataC_M_FROM_QPI:
DRS DataC_F packets received from QPI.
Expressed in bytes
(CTO_COUNT
with:{Q_Py_PCI_PMON_PKT_z_MATCH0[12:0]=0x1C00,
Q_Py_PCI_PMON_PKT_z_MASK0[12:0]=0x1FE0},
Q_Py_PCI_PMON_PKT_z_MATCH1[19:16]=0x1,
Q_Py_PCI_PMON_PKT_z_MASK1[19:16]=0xF}) * 64
DRS_FULL_CACHELINE_MSGS_FROM_QPI:
DRS Full Cacheline Data Messages From
QPI in bytes
(CTO_COUNT
with:{Q_Py_PCI_PMON_PKT_z_MATCH0[12:0]=0x1C00,Q
_Py_PCI_PMON_PKT_z_MASK0[12:0]=0x1F00}) * 64)
Symbol Name
Event
Code
Ctrs
Extra
Select
Bit
Max
Inc/
Cyc
Description