Intel Xeon E5-2600 Series

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Reference Number: 327043-001 127

Intel® Xeon® Processor E5-2600 Product Family Uncore Performance Monitoring

• Definition: Counts the number of allocations into the Intel® QPI Ingress. This tracks one of the

three rings that are used by the Intel® QPI agent. This can be used in conjunction with the Intel®

QPI Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple

ingress buffers can be tracked at a given time using multiple counters.

RxR_OCCUPANCY

• Title: Ingress Occupancy Accumulator

• Category: INGRESS Events

• Event Code: 0x13

• Max. Inc/Cyc: 32, Register Restrictions: 0

• Definition: Accumulates the occupancy of a given Intel® QPI Ingress queue in each cycles. This

tracks one of the three ring Ingress buffers. This can be used with the Intel® QPI Ingress Not

Empty event to calculate average occupancy or the Intel® QPI Ingress Allocations event in order to

calculate average queuing latency.

TxR_CYCLES_FULL

• Title: Egress Cycles Full

• Category: EGRESS Events

• Event Code: 0x25

• Max. Inc/Cyc: 1, Register Restrictions: 0-1

• Definition: Counts the number of cycles when the R2PCIe Egress buffer is full.

Table 2-133. Unit Masks for RxR_INSERTS

Extension

umask

[15:8]

Description

HOM bxxxxxxx1 HOM:

HOM Ingress Queue

SNP bxxxxxx1x SNP:

SNP Ingress Queue

NDR bxxxxx1xx NDR:

NDR Ingress Queue

DRS bxxxx1xxx DRS:

DRS Ingress Queue

NCB bxxx1xxxx NCB:

NCB Ingress Queue

NCS bxx1xxxxx NCS:

NCS Ingress Queue

Table 2-134. Unit Masks for RxR_OCCUPANCY