HP Caliper User's Guide

L1 Instruction TLB Miss Ratio Ratio of L1 instruction TLB misses to Total L1
instruction TLB references.
Metrics for Integrity Servers Dual-Core Itanium 2 and Itanium 9300 Quad-Core Processor Systems
BACK_END_BUBBLE.ALL Number of cycles when the back end of the
pipeline was stalled. This is the number of cycles
lost (stall cycles) due to any of five possible
events (FPU/L1D, RSE, EXE, branch/exception,
or the front end).
BACK_END_BUBBLE.FE Full Pipe Bubbles in Main Pipe due to front end.
This is the number of cycles lost (stall cycles) due
to ICACHE ITLB and branch execution stalls.
BE_LOST_BW_DUE_TO_FE.ALL Number of invalid bundles at the exit from
Instruction Buffer only if the back end is not
stalled for other reasons.
BE_LOST_BW_DUE_TO_FE.IMISS Number of invalid bundles at the exit from
Instruction Buffer due to instruction cache miss
stalls (only if the back end is not stalled for other
reasons).
BE_LOST_BW_DUE_TO_FE.TLBMISS Number of invalid bundles at the exit from
Instruction Buffer due to instruction TLB miss
stalls (only if the back end is not stalled for other
reasons).
CPU_OP_CYCLES.ALL Number of elapsed CPU operating cycles.
IA64_INST_RETIRED Number of retired IA-64 instructions. The count
includes predicated on and predicated off
instructions and nops, but excludes
hardware-inserted RSE operations.
ITLB_MISSES_FETCH.L1ITLB Number of L1 ITLB misses for demand fetch.
ITLB_MISSES_FETCH.L2ITLB Number of L2 ITLB misses for demand fetch.
L1ITLB_INSERTS_HPW Number of instruction TLB inserts done by the
hardware page walker (HPW).
L1I_READS The number of data memory read references
issued into the memory pipeline that are serviced
by L1D (only integer loads), RSE loads, L1-hinted
loads (L1D returns data if it hits in L1D but does
not do a fill), and check loads (ld.c).
Non-cacheable reads, VHPT loads, semaphores,
floating-point loads, and lfetch instructions are
not counted here because L1D does not handle
these. The count includes wrong path operations
but excludes predicated off operations.
itlb Measurement Report Description 283