Example 1 HP Caliper Advisor Report
===========================================================================
HP Caliper 4.3.0 Advisor Report for my_app
===========================================================================
Analysis Focus |
|
Executable: | /tmp/my_app |
Last modified: | August 15, 2004 at 03:10 PM |
Processor type: | Itanium2 9M |
Processor speed: | 1599 MHz |
OS version: |
Performance Databases
/home/me/.hp_caliper_databases/cpu - March 23, 2005 at 11:17 AM /home/me/.hp_caliper_databases/fprof - March 23, 2005 at 07:52 PM
Rule Files
default - Default Caliper Advisor rules @ /opt/caliper/rules
Index Class Analysis
23.9 cpu | Function profile [cpu_fprof_1] | |
| The following functions account for 23.9% of the CPU cycles | |
| used by the application. Improving the algorithm(s) used in | |
| these routines and/or increasing the compiler optimization | |
| level can | improve performance. |
| 11.9% | compare_items |
| 8.2% | search_dbase |
| 3.8% | new_item_insert |
Use the following Caliper command to get a source listing of the 'hot spots' in these routines:
caliper report fprof
16.6memory ITLB misses [mem_itlb_general]
The percentage of ITLB misses (16.6%) is higher than normal. This may indicate a poor setting for the virtual memory instruction page size.
Try adding "+pi 4M" to the application's link command.
*Note: 1 piece of advice was not printed due to cutoff limits and/or selection criteria.
[Minimum index: 5.0, minimum count: 5, maximum count: 15]
Steps in Using the Advisor
The Advisor is part of an iterative process of building, measuring, understanding, and tuning an application's performance, as shown in Figure 13 (page 78).
Steps in Using the Advisor 77