HP Caliper User Guide Release 5.5 (5900-2351, August 2012)

FLITLB_INSERT_HPW Demand fetch missed in the FLITLB and caused an IPC
request that resulted in an IPC miss that was filled with an
HPW insert.
% of Cycles lost due to all stalls
(lower is better)
Percentage of cycles lost due to all stalls.
% of Cycles lost due to frontend stalls
(ICACHE, ITLB, and branch
execution)
Percentage of cycles lost due to ICACHE, ITLB and branch
execution stalls.
% of Cycles lost due to instruction TLB
stalls
Percentage of cycles lost due to instruction TLB miss stalls.
% of Cycles lost due to instruction
cache stalls
Percentage of cycles lost due to instruction cache miss stalls.
% of Cycles lost due to instruction
access stalls (ICACHE and ITLB)
Percentage of cycles lost due to instruction cache miss and
instruction TLB miss stalls.
% of Cycles lost due to branch
execution
Percentage of cycles lost due to branch execution (branch
re-steer).
Total L1 instruction TLB references Number of FLITLB references.
L1 instruction TLB miss percentage Percentage of FLITLB accesses that missed.
L2 instruction TLB misses Number of MLITLB misses.
L1 ITLB miss per 1000 instructions
retired
Number of FLITLB misses per 1000 instructions retired.
L2 ITLB miss per 1000 instructions
retired
Number of MLITLB misses per 1000 instructions retired.
itlb Measurement Report Metrics
See Table 28 (page 220).
In this table, “program object” refers to any of the following:
• Thread
• Load module
• Function
• Statement
• Cache line
Table 28 Information in itlb Measurement Reports
DescriptionColumn
Percent of the total for <metric> attributable to a given program object. The <metric> is the same
as the <metric> HP Caliper uses for sorting, except when the sort metric is address, in which
case sampled misses is used.
% Total <metric>
Running sum of the percent of total for <metric> accounted for by the given program object and
those listed above it.
Cumulat % of Total
Total number of sampled instruction TLB misses attributed to the given program object.Sampled ITLB
Misses
Number of sampled instruction TLB misses that hit the L2 instruction TLB for the given program
object. L2 fills are not reported for, and do not apply to, Itanium systems.
ITLB L2 Fills
Number of sampled instruction TLB misses that were handled by the HPW for the given program
object.
ITLB HPW Fills
Number of sampled instruction TLB misses that were handled by software for the given program
object.
ITLB Soft Fills
220 Descriptions of Measurement Reports