Intel® Xeon® Processor E5-2600 Product Family Uncore Performance Monitoring
104
Reference Number: 327043-001
RxL_INSERTS_HOM
• Title:
Rx Flit Buffer Allocations - HOM
• Category:
RXQ Events
• Event Code:
0x0C
• Extra Select Bit:
Y
• Max. Inc/Cyc:
1,
Register Restrictions:
0-3
• Definition:
Number of allocations into the Intel® QPI Rx Flit Buffer. Generally, when data is trans-
mitted across Intel® QPI, it will bypass the RxQ and pass directly to the ring interface. If things
back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus
increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event
in order to calculate the average flit buffer lifetime. This monitors only HOM flits.
RxL_INSERTS_NCB
• Title:
Rx Flit Buffer Allocations - NCB
• Category:
RXQ Events
• Event Code:
0x0A
• Extra Select Bit:
Y
• Max. Inc/Cyc:
1,
Register Restrictions:
0-3
• Definition:
Number of allocations into the Intel® QPI Rx Flit Buffer. Generally, when data is trans-
mitted across Intel® QPI, it will bypass the RxQ and pass directly to the ring interface. If things
back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus
increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event
in order to calculate the average flit buffer lifetime. This monitors only NCB flits.
RxL_INSERTS_NCS
• Title:
Rx Flit Buffer Allocations - NCS
• Category:
RXQ Events
• Event Code:
0x0B
• Extra Select Bit:
Y
• Max. Inc/Cyc:
1,
Register Restrictions:
0-3
• Definition:
Number of allocations into the Intel® QPI Rx Flit Buffer. Generally, when data is trans-
mitted across Intel® QPI, it will bypass the RxQ and pass directly to the ring interface. If things
back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus
increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event
in order to calculate the average flit buffer lifetime. This monitors only NCS flits.
RxL_INSERTS_NDR
• Title:
Rx Flit Buffer Allocations - NDR
• Category:
RXQ Events
• Event Code:
0x0E
• Extra Select Bit:
Y
• Max. Inc/Cyc:
1,
Register Restrictions:
0-3
• Definition:
Number of allocations into the Intel® QPI Rx Flit Buffer. Generally, when data is trans-
mitted across Intel® QPI, it will bypass the RxQ and pass directly to the ring interface. If things
back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus
increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event
in order to calculate the average flit buffer lifetime. This monitors only NDR flits.
