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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