HP Caliper 5.3 User Guide (5900-1558, February 2011)

measurement. You can use command-line options to limit the scope of the measurement. Specifically,
you can:
• Limit measurement to a specific privilege level: -m event_set[:all|user|kernel]
• Include idle: --exclude-idle False
• Exclude the interruption state: --measure-on-interrupts off
• Only measure the interruption state: --measure-on-interrupts only
The event per kinst (event per 1000 instructions) metrics are computed using all instructions retired.
This includes nops, predicated off instructions, failed speculation and instructions and associated
recovery code as well as the architecturally visible instruction. You can eliminate idle loops effects
by using the command-line option --exclude-idle True (which is the default). The effects of
failed speculative operations and TLB misses cannot be directly eliminated, but you can get an
estimate of the impact of events from the cspec, dspec, and tlb event sets. You can use the
cpi event set to obtain the fraction of all instructions retired that have an architecturally visible
result, except for predicated off branches, which are counted as useful instructions (non-taken
branch) by the Itanium 2 PMU.
Metrics Available from this Measurement
The following metrics are available from this event set. These descriptions do not take into account
any command-line options you might use.
The metrics are:
• Total - Misses Per Sec
This is the number of demand instruction cache line accesses and instruction prefetch cache
lines accesses that miss the L1 instruction cache and ISB per second.
• Dfetch - Misses Per Sec
This is the number of demand instruction cache line accesses that miss both the L1 instruction
cache and the ISB.
• Pfetch - Misses Per Sec
This is the number of streaming and non-streaming prefetches that miss the L1I cache and ISB
per second. These are the prefetches that will actually be issued to the L1 and possibly outer
levels of the cache hierarchy, potentially culminating in a request to memory.
• Total - Misses Per Kinst
This is the number of demand instruction cache line accesses that and instruction prefetch
cache lines accesses that miss the L1 instruction cache and ISB per 1000 instructions retired.
• Dfectch - Misses Per Kinst
This is the number of demand instruction cache line access that miss the L1 instruction cache
and ISB per 1000 instructions retired.
• Pfetch - Misses Per Kinst
This is the number of streaming and non-streaming prefetches that miss the L1I cache and ISB
per 1000 instructions retired. These are the prefetches that will actually be issued to the L1
and possibly outer levels of the cache hierarchy, potentially culminating in a request to memory.
• Ifills Per Kinst
This the number of (64 byte) lines per 1000 instruction retired that are moved from the ISB to
the L1I cache. For the Itanium 2 family of processors (McKinley, Madison, and Deerfield), this
should be approximately equal to the number of ISB Lines per 1000 instructions retired.
• ISB Lines Per Kinst
This is the number of cache line chunks (64 bytes) that were delivered from the L1 cache and
beyond to the the ISB per 1000 instructions retired. For the Itanium 2 family of processors
234 Event Set Descriptions for CPU Metrics