Uncore Manual

Reference Number: 329468-002 45
Uncore Performance Monitoring
Cacheing Agent (Cbo) Performance Monitoring
RING_BOUNCES
• Title: Number of LLC responses that bounced on the Ring.
• Category: RING Events
• Event Code: 0x05
• Max. Inc/Cyc:. 1, Register Restrictions: 0-1
• Definition:
RING_IV_USED
• Title: IV Ring in Use
• Category: RING Events
• Event Code: 0x1e
• Max. Inc/Cyc:. 1, Register Restrictions: 2-3
• Definition: Counts the number of cycles that the IV ring is being used at this ring stop. This
includes when packets are passing by and when packets are being sunk, but does not include
when packets are being sent from the ring stop.
RING_SRC_THRTL
• Title:
• Category: RING Events
• Event Code: 0x07
• Max. Inc/Cyc:. 1, Register Restrictions: 0-1
• Definition:
RxR_EXT_STARVED
• Title: Ingress Arbiter Blocking Cycles
• Category: INGRESS Events
• Event Code: 0x12
• Max. Inc/Cyc:. 1, Register Restrictions: 0-1
• Definition: Counts cycles in external starvation. This occurs when one of the ingress queues is
being starved by the other queues.
Table 2-25. Unit Masks for RING_BOUNCES
Extension
umask
[15:8]
Description
AD_IRQ bxxxxxx1x
AK bxxxxx1xx Acknowledgements to core
BL bxxxx1xxx Data Responses to core
IV bxxx1xxxx Snoops of processor's cache.
Table 2-26. Unit Masks for RING_IV_USED
Extension
umask
[15:8]
Description
ANY b00001111 Any
Filters any polarity
UP b00110011 Up
Filters for Up polarity
DOWN b11001100 Down
Filters for Down polarity