Vol. 3B 19-185

PERFORMANCE-MONITORING EVENTS

ESCR Event Mask

Bit 15: ALL 

ESCR[24:9]
Count all μops operating on packed single-precision operands.

CCCR Select

01H

CCCR[15:13]

Event Specific 

Notes

1: If an instruction contains more than one packed SP μops, each 

packed SP μop that is specified by the event mask will be counted. 

2: This metric counts instances of packed memory μops in a repeat 

move string.

packed_DP_uop 

This event increments for each packed double-precision μop, 

specified through the event mask for detection.

ESCR restrictions

MSR_FIRM_ESCR0
MSR_FIRM_ESCR1

Counter numbers 

per ESCR

ESCR0: 8, 9
ESCR1: 10, 11

ESCR Event Select

0CH

ESCR[31:25]

ESCR Event Mask

Bit 15: ALL 

ESCR[24:9]
Count all μops operating on packed double-precision operands.

CCCR Select

01H

CCCR[15:13]

Event Specific 

Notes

If an instruction contains more than one packed DP μops, each 

packed DP μop that is specified by the event mask will be counted.

scalar_SP_uop 

This event increments for each scalar single-precision μop, specified 

through the event mask for detection.

ESCR restrictions

MSR_FIRM_ESCR0
MSR_FIRM_ESCR1

Counter numbers 

per ESCR

ESCR0: 8, 9
ESCR1: 10, 11

ESCR Event Select

0AH

ESCR[31:25]

ESCR Event Mask

Bit 15: ALL 

ESCR[24:9]
Count all μops operating on scalar single-precision operands.

CCCR Select

01H

CCCR[15:13]

Event Specific 

Notes

If an instruction contains more than one scalar SP μops, each scalar 

SP μop that is specified by the event mask will be counted.

scalar_DP_uop 

This event increments for each scalar double-precision μop, specified 

through the event mask for detection.

ESCR restrictions

MSR_FIRM_ESCR0
MSR_FIRM_ESCR1

Counter numbers 

per ESCR

ESCR0: 8, 9
ESCR1: 10, 11

ESCR Event Select

0EH

ESCR[31:25]

ESCR Event Mask

Bit 15: ALL 

ESCR[24:9]
Count all μops operating on scalar double-precision operands.

CCCR Select

01H

CCCR[15:13]

Table 19-28.  Performance Monitoring Events Supported by Intel NetBurst® Microarchitecture 

for Non-Retirement Counting (Contd.)

Event Name

Event Parameters  Parameter Value

Description