Uncore Manual

Reference Number: 329468-002 159
Uncore Performance Monitoring
Intel® QPI Link Layer Performance Monitoring
TxR_AD_HOM_CREDIT_OCCUPANCY
• Title: R3QPI Egress Credit Occupancy - AD HOM
• Category: R3QPI_EGRESS_CREDITS Events
• Event Code: 0x22
• 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 for HOM messages on AD.
TxR_AD_NDR_CREDIT_ACQUIRED
• Title: R3QPI Egress Credit Occupancy - AD NDR
• Category: R3QPI_EGRESS_CREDITS Events
• Event Code: 0x28
• 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 NDR messages on AD.
TxR_AD_NDR_CREDIT_OCCUPANCY
• Title: R3QPI Egress Credit Occupancy - AD NDR
• Category: R3QPI_EGRESS_CREDITS Events
• Event Code: 0x24
• Extra Select Bit: Y
• Max. Inc/Cyc:. 8, 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 for NDR messages on AD.
Table 2-161. Unit Masks for TxR_AD_HOM_CREDIT_OCCUPANCY
Extension
umask
[15:8]
Description
VN0 b00000001 for VN0
VN1 b00000010 for VN1
Table 2-162. Unit Masks for TxR_AD_NDR_CREDIT_ACQUIRED
Extension
umask
[15:8]
Description
VN0 b00000001 for VN0
VN1 b00000010 for VN1
Table 2-163. Unit Masks for TxR_AD_NDR_CREDIT_OCCUPANCY
Extension
umask
[15:8]
Description
VN0 b00000001 for VN0
VN1 b00000010 for VN1