Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Performance counter report

Hey

I am running performance counter on my C code

My problem is that the report only show the result for section 1 !! (even if I change sections order it only show the first)

It should show 4 sections !

What could be the problem ?!

thnx

%%%%%%%%%%%%%%%%

perf_print_formatted_report((void *)PERFORMANCE_COUNTER_BASE,

ALT_CPU_FREQ,4,

"section_1",

"section_2",

"section_3",

"section_4");

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

--Performance Counter Report--

Total Time: 3.35524 seconds (335524437 clock-cycles)

+---------------+-----+-----------+---------------+-----------+

| Section | % | Time (sec)| Time (clocks)|Occurrences|

+---------------+-----+-----------+---------------+-----------+

|section_1 | 0.27| 0.00905| 905319| 1|

+---------------+-----+-----------+---------------+-----------+

|section_2 | 0| 0.00000| 0| 0|

+---------------+-----+-----------+---------------+-----------+

|section_3 | 0| 0.00000| 0| 0|

+---------------+-----+-----------+---------------+-----------+

|section_4 | 0| 0.00000| 0| 10175|

+---------------+-----+-----------+---------------+-----------+

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    9 years ago

    It's hard to know without seeing more code, but perhaps you are forgetting to change the second parameter of the PERF_BEGIN/PERF_END calls for the different sections? 

    ...
// Section 1
PERF_BEGIN(PERFORMANCE_COUNTER_BASE, 1);
foo();
PERF_END(PERFORMANCE_COUNTER_BASE, 1);
// Section 2
PERF_BEGIN(PERFORMANCE_COUNTER_BASE, 2);
bar();
PERF_END(PERFORMANCE_COUNTER_BASE, 2);
...
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    9 years ago

    --- Quote Start ---

    It's hard to know without seeing more code, but perhaps you are forgetting to change the second parameter of the PERF_BEGIN/PERF_END calls for the different sections? 

    ...
// Section 1
PERF_BEGIN(PERFORMANCE_COUNTER_BASE, 1);
foo();
PERF_END(PERFORMANCE_COUNTER_BASE, 1);
// Section 2
PERF_BEGIN(PERFORMANCE_COUNTER_BASE, 2);
bar();
PERF_END(PERFORMANCE_COUNTER_BASE, 2);
...

    --- Quote End ---

    thnx I solved it