Intel Xeon E5-2600 Series Monitoring Manual page 55

Intel® Xeon® Processor E5-2600 Product Family Uncore Performance Monitoring
TAD_REQUESTS_G0
• Title: HA Requests to a TAD Region - Group 0
• Category: TAD Events
• Event Code: 0x1B
• 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 (tar-
get address decode) regions in each home agent. All requests destined for the memory controller
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 0 to 7. This event is useful for understanding how applica-
tions 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.
Table 2-50. Unit Masks for TAD_REQUESTS_G0
Extension
REGION0
REGION1
REGION2
REGION3
REGION4
REGION5
REGION6
REGION7
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 (tar-
get address decode) regions in each home agent. All requests destined for the memory controller
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 applica-
tions 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.
Table 2-51. Unit Masks for TAD_REQUESTS_G1 (Sheet 1 of 2)
Extension
REGION8
REGION9
Reference Number: 327043-001
umask
[15:8]
bxxxxxxx1 TAD Region 0:
Filters request made to TAD Region 0
bxxxxxx1x TAD Region 1:
Filters request made to TAD Region 1
bxxxxx1xx TAD Region 2:
Filters request made to TAD Region 2
bxxxx1xxx TAD Region 3:
Filters request made to TAD Region 3
bxxx1xxxx TAD Region 4:
Filters request made to TAD Region 4
bxx1xxxxx TAD Region 5:
Filters request made to TAD Region 5
bx1xxxxxx TAD Region 6:
Filters request made to TAD Region 6
b1xxxxxxx TAD Region 7:
Filters request made to TAD Region 7
umask
[15:8]
bxxxxxxx1 TAD Region 8:
Filters request made to TAD Region 8
bxxxxxx1x TAD Region 9:
Filters request made to TAD Region 9
Description
Description
55