Intel ARCHITECTURE IA-32 User Manual

Page 483

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Using Performance Monitoring Events

B

B-29

3rd-Level
Cache Reads
Hit Modified

The number of
3rd-level cache read
references (loads
and RFOs) that hit
the cache line in
modified state.
Beware of granularity
differences.

BSQ_cache_reference

RD_3rdL_HITM

3rd-Level
Cache Reads
Hit Exclusive

The number of
3rd-level cache read
references (loads
and RFOs) that hit
the cache line in
exclusive state.
Beware of granularity
differences.

BSQ_cache_reference

RD_3rdL_HITE

MOB Load
Replays Retired

The number of
retired load

μops that

experienced replays
related to the MOB.

Replay_event

; set the

following replay tag:
MOB_load_replay_

retired

NBOGUS

Loads Retired

The number of
retired load
operations that were
tagged at the front
end.

Front_end_event

; set

the following front end
tag: Memory_loads

NBOGUS

Stores Retired

The number of
retired stored
operations that were
tagged at the front
end. This stat is often
used in a
per-instruction ratio.

Front_end_event

; set

the following front end
tag: Memory_stores

NBOGUS

continued

Table B-1

Pentium 4 Processor Performance Metrics (continued)

Metric

Description

Event Name or Metric
Expression

Event Mask Value
Required

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