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IA-32 Intel® Architecture Optimization
B-30
All WCB
Evictions
The number of times
a WC buffer eviction
occurred due to any
causes (This can be
used to distinguish
64K aliasing cases
that contribute more
significantly to
performance penalty,
e.g., stores that are
64K aliased. A high
count of this metric
when there is no
significant
contribution due to
write combining
buffer full condition
may indicate such a
situation.)
WC_buffer WCB_EVICTS
WCB Full
Evictions
The number of times
a WC buffer eviction
occurred when all of
the WC buffers are
already allocated.
WC_buffer WCB_FULL_EVICT
continued
Table B-1 Pentium 4 Processor Performance Metrics (continued)
Metric Description
Event Name or Metric
Expression
Event Mask Value
Required