Uncore Manual

Uncore Performance Monitoring
Intel® QPI Link Layer Performance Monitoring
160 Reference Number: 329468-002
TxR_AD_SNP_CREDIT_ACQUIRED
• Title: R3QPI Egress Credit Occupancy - SNP
• Category: R3QPI_EGRESS_CREDITS Events
• Event Code: 0x27
• Extra Select Bit: Y
• Max. Inc/Cyc:. 1, Register Restrictions: 0-3
• Definition: Number of link layer credits into the R3 (for transactions across the BGF) acquired each
cycle. Flow Control FIFO for Snoop messages on AD.
TxR_AD_SNP_CREDIT_OCCUPANCY
• Title: R3QPI Egress Credit Occupancy - AD SNP
• Category: R3QPI_EGRESS_CREDITS Events
• Event Code: 0x23
• Extra Select Bit: Y
• Max. Inc/Cyc:. 28, Register Restrictions: 0-3
• Definition: Occupancy event that tracks the number of link layer credits into the R3 (for transac-
tions across the BGF) available in each cycle. Flow Control FIFO fro Snoop messages on AD.
TxR_AK_NDR_CREDIT_ACQUIRED
• Title: R3QPI Egress Credit Occupancy - AK NDR
• Category: R3QPI_EGRESS_CREDITS Events
• Event Code: 0x29
• Extra Select Bit: Y
• Max. Inc/Cyc:. 1, Register Restrictions: 0-3
• Definition: Number of credits into the R3 (for transactions across the BGF) acquired each cycle.
Local NDR message class to AK Egress.
TxR_AK_NDR_CREDIT_OCCUPANCY
• Title: R3QPI Egress Credit Occupancy - AK NDR
• Category: R3QPI_EGRESS_CREDITS Events
• Event Code: 0x25
• Extra Select Bit: Y
• Max. Inc/Cyc:. 6, Register Restrictions: 0-3
• Definition: Occupancy event that tracks the number of credits into the R3 (for transactions across
the BGF) available in each cycle. Local NDR message class to AK Egress.
Table 2-164. Unit Masks for TxR_AD_SNP_CREDIT_ACQUIRED
Extension
umask
[15:8]
Description
VN0 b00000001 for VN0
VN1 b00000010 for VN1
Table 2-165. Unit Masks for TxR_AD_SNP_CREDIT_OCCUPANCY
Extension
umask
[15:8]
Description
VN0 b00000001 for VN0
VN1 b00000010 for VN1