HP Caliper User's Guide

• Chka Retired
This is the total number advanced check loads (chk.a) and check loads (ld.c)
that were retired during the sample interval.
• Chka Failed
This is the total number advanced check loads (chk.a) and check loads (ld.c)
that failed during the sample interval.
• ALAT Access
This is the number of times the ALAT is accessed during the sample interval. In
effect, this is the count of all instructions that access the ALAT. Instructions that
access the ALAT include ld.a, ld.sa, ldf.a, ldf.sa, and ld.c.nc.
• ALAT Misses
This is the number of misses that incurred by instructions accessing the ALAT
during the sample interval. Instructions that access the ALAT include ld.a, ld.sa,
ldf.a, ldf.sa, and ld.c.nc.
• Data Speculation:
— Total Specs Per Sec
This is the total number of data speculation events per second.
— Failed Specs Per Sec
This is the number of data speculation fail events per second.
— Total Specs Per Kinst
This is the total number of data speculation events per 1000 retired instructions.
The instruction count includes predicated off and nop instructions.
— Failed Specs Per Kinst
This is the number of data speculation fail events per 1000 retired instructions.
The instruction count includes predicated off and nop instructions.
— %Miss
This is the percentage of failed check advance loads (chk.a) and check loads
(ld.c) out of the total number of retired check advance loads and check loads.
Ideally, this metric will be close to zero. High values would tend to suggest
that the PBO information, used by the optimizer when creating the binary code,
might have been invalid.
• %ALAT Miss
This is the percentage of the number of times that the ALAT does not have any
information regarding a memory address (misses) out of the total number of times
the ALAT is accessed. Instructions that access the ALAT include ld.a, ld.sa,
ldf.a, ldf.sa, and ld.c.nc.
316 Event Set Descriptions for CPU Metrics