Uncore Manual

Reference Number: 329468-002 73
Uncore Performance Monitoring
Home Agent (HA) Performance Monitoring
TAD_REQUESTS_G1
• Title: HA Requests to a TAD Region - Group 1
• Category: TAD Events
• Event Code: 0x1c
• Max. Inc/Cyc:. 2, Register Restrictions: 0-3
• Definition: Counts the number of HA requests to a given TAD region. There are up to 11 TAD
(target address decode) regions in each home agent. All requests destined for the memory con-
troller must first be decoded to determine which TAD region they are in. This event is filtered
based on the TAD region ID, and covers regions 8 to 10. This event is useful for understanding
how applications are using the memory that is spread across the different memory regions. It is
particularly useful for “Monroe” systems that use the TAD to enable individual channels to enter
self-refresh to save power.
TxR_AD_CYCLES_FULL
• Title: AD Egress Full
• Category: EGRESS Events
• Event Code: 0x2a
• Max. Inc/Cyc:. 1, Register Restrictions: 0-3
• Definition: AD Egress Full
Table 2-63. Unit Masks for TAD_REQUESTS_G0
Extension
umask
[15:8]
Description
REGION0 b00000001 TAD Region 0
Filters request made to TAD Region 0
REGION1 b00000010 TAD Region 1
Filters request made to TAD Region 1
REGION2 b00000100 TAD Region 2
Filters request made to TAD Region 2
REGION3 b00001000 TAD Region 3
Filters request made to TAD Region 3
REGION4 b00010000 TAD Region 4
Filters request made to TAD Region 4
REGION5 b00100000 TAD Region 5
Filters request made to TAD Region 5
REGION6 b01000000 TAD Region 6
Filters request made to TAD Region 6
REGION7 b10000000 TAD Region 7
Filters request made to TAD Region 7
Table 2-64. Unit Masks for TAD_REQUESTS_G1
Extension
umask
[15:8]
Description
REGION8 b00000001 TAD Region 8
Filters request made to TAD Region 8
REGION9 b00000010 TAD Region 9
Filters request made to TAD Region 9
REGION10 b00000100 TAD Region 10
Filters request made to TAD Region 10
REGION11 b00001000 TAD Region 11
Filters request made to TAD Region 11