Intel Xeon E5-2600 Series - R3 QPI Performance Monitoring Events; An Overview; R3 QPI Box Events Ordered by Code

Intel® Xeon® Processor E5-2600 Product Family Uncore Performance Monitoring
122 Reference Number: 327043-001
2.9.4 R3QPI Performance Monitoring Events
2.9.4.1 An Overview
R3QPI provides events to track information related to all the traffic passing through it’s boundaries.
• VN/IIO credit tracking - in addition to tracking the occupancy of the full VNA queue, R3QPI
provides a great deal of additional information: credits rejected, acquired and used often broken
down by Message Class.
•Ring Stop Events
To track Ingress/Egress Traffic and Ring Utilization (broken down by direction and ring type)
statistics.
2.9.5 R3QPI Box Events Ordered By Code
The following table summarizes the directly measured R3QPI Box events.
Table 2-122. Performance Monitor Events for R3QPI
Symbol Name
Event
Code
Ctrs
Max
Inc/
Cyc
Description
CLOCKTICKS 0x1 0-2 Number of uclks in domain
RING_AD_USED 0x07 0-2 1 R3 AD Ring in Use
RING_AK_USED 0x08 0-2 1 R3 AK Ring in Use
RING_BL_USED 0x09 0-2 1 R3 BL Ring in Use
RING_IV_USED 0x0A 0-2 1 R3 IV Ring in Use
RxR_CYCLES_NE 0x10 0-1 1 Ingress Cycles Not Empty
RxR_INSERTS 0x11 0-1 1 Ingress Allocations
RxR_BYPASSED 0x12 0-1 1 Ingress Bypassed
RxR_OCCUPANCY 0x13 0 32 Ingress Occupancy Accumulator
IIO_CREDITS_ACQUIRED 0x20 0-1 1 to IIO BL Credit Acquired
IIO_CREDITS_REJECT 0x21 0-1 1 to IIO BL Credit Rejected
IIO_CREDITS_USED 0x22 0-1 1 to IIO BL Credit In Use
TxR_CYCLES_NE 0x23 0-1 1 Egress Cycles Not Empty
TxR_INSERTS 0x24 0-1 1 Egress Allocations
TxR_CYCLES_FULL 0x25 0-1 1 Egress Cycles Full
TxR_NACK 0x26 0-1 1 Egress NACK
VNA_CREDIT_CYCLES_OUT 0x31 0-1 1 Cycles with no VNA credits available
VNA_CREDIT_CYCLES_USED 0x32 0-1 1 Cycles with 1 or more VNA credits in use
VNA_CREDITS_ACQUIRED 0x33 0-1 4 VNA credit Acquisitions
VNA_CREDITS_REJECT 0x34 0-1 1 VNA Credit Reject
VN0_CREDITS_USED 0x36 0-1 1 VN0 Credit Used
VN0_CREDITS_REJECT 0x37 0-1 1 VN0 Credit Acquisition Failed on DRS