Intel ARCHITECTURE IA-32 Reference Manual page 495

Table B-1 Pentium 4 Processor Performance Metrics (continued)
Metric Description
UC Write The number of UC
Partial (BSQ) write transactions.
Beware of granularity
issues between BSQ
and FSB IOQ events.
IO Reads The number of
Chunk (BSQ) 8-byte aligned IO
port read
transactions.
IO Writes The number of IO
Chunk (BSQ) port write
transactions.
Using Performance Monitoring Events
Event Name or Metric
Expression
BSQ_allocation
BSQ_allocation
BSQ_allocation
B
Event Mask Value
Required
1. REQ_TYPE0|
REQ_LEN0|
REQ_SPLIT_TYPE|
REQ_ORD_TYPE|
REQ_DEM_TYPE
2. Enable edge
6
filtering in
the CCCR.
1. REQ_LEN0|
REQ_ORD_TYPE|
REQ_IO_TYPE|
REQ_DEM_TYPE
2. Enable edge
6
filtering in
the CCCR.
1. REQ_TYPE0|
REQ_LEN0|
REQ_ORD_TYPE|RE
Q_IO_TYPE|REQ_D
EM_TYPE
2. Enable edge
6
filtering in
the CCCR.
continued
B-41