Intel BX80571E7500 - Core 2 Duo 2.93 GHz Processor Programming Manual page 35

I ® X ® P 7500 S
NTEL EON ROCESSOR
MAF_ACK
• Title: MAF ACK
• Category: Local - MAF
• Event Code: 0x10, Max. Inc/Cyc: 1,
• Definition: Miss Address File Acknowledgements.
MAF_NACK1
• Title: MAF NACK1
• Category: Local - MAF
• Event Code: 0x11, Max. Inc/Cyc: 1,
• Definition: Rejected (not-acknowledged) LLC pipeline passes (Set 1).
Extension
---
GO_PENDING
VIC_PENDING
SNP_PENDING
AC_PENDING
IDX_BLOCK
PA_BLOCK
IDLE_QPI
ALL_MAF_NACK2
TOTAL_MAF_NACKS
MAF_NACK2
• Title: MAF NACK2
• Category: Local - MAF
• Event Code: 0x12, Max. Inc/Cyc: 1,
• Definition: Rejected (not-acknowledged) LLC pipeline passes (Set 2).
Extension
---
MAF_FULL
U P G
ERIES NCORE ROGRAMMING UIDE
umask
[15:8]
b00000000 (*nothing will be counted*)
bxxxxxxx1 A message associated with a transaction monitored by the MAF was
delayed because the transaction had a GO pending in the requesting
core.
bxxxxxx1x An LLC fill was delayed because the victimized data in the LLC was
still being processed.
bxxxxx1xx A message associated with a transaction monitored by the MAF was
delayed because the transaction had a snoop pending.
bxxxx1xxx An incoming remote Intel QPI snoop was delayed because it conflicted
with an existing MAF transaction that had an Ack Conflict pending.
bxxx1xxxx An incoming local core RD that missed the LLC was delayed because a
victim way could not be immediately chosen.
bxx1xxxxx If this count is very high, it likely means that software is frequently
issuing requests to the same physical address from disparate threads
simultaneously. Though there will also sometimes be a small number
of PA_BLOCK nacks in the background due to cases when a pair of
messages associated with the same transaction happen to arrive at
the LLC at the same time and one of them gets delayed.
bx1xxxxxx Idle Intel QPI State
b1xxxxxxx A message was rejected when one or more of the sub-events under
MAF_NACK2 was true. This is included in MAF_NACK1 so that
MAF_NACK1 with sub-event 0xFF will count the total number of
Nacks.
b11111111 Total number of LLC pipeline passes that were nacked.
umask
[15:8]
b00000000 (*nothing will be counted*)
bxxxxxxx1 An incoming local processor RD/WR or remote Intel QPI snoop
request that required a MAF entry was delayed because no MAF entry
was available.
UNCORE PERFORMANCE MONITORING
Description
Description
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