Re: Profiling under Linux

[Ignoramus11615]

On 2009-11-05, Ji?? Pale?ek <jpalecek@web.de> wrote:
> On Thu, 05 Nov 2009 21:59:40 +0100, Ignoramus11615  
><ignoramus11615@nospam.11615.invalid> wrote:
>
>> I have a C++ program that is slower than I would like.
>>
>> I would like to use a profiler that would tell me in what functions is
>> it spending the most actual time.
>>
>> gprof seems like an interesting tool, but I would like to know if
>> there are other alternatives.
>
> There are alternatives, among others:
>
>   - oprofile, which gives coarse, but based on real performance data (taken  
>  from the performance counters in the CPU)
>
>   - valgrind --tool=callgrind, which gives very detailed data, which are  
> however based on simulation
>
> None of these require you to recompile the program.
>
>> The issue is that I have a particular program that is slower under
>> Windows than it is under Linux, and I want to know why that is the
>> case.
>
> I'm afraid profiling on Linux won't show you why it's slower on Windows.

Sorry, I meant the Linux program is slower.

i

> Regards
>      Jiri Palecek