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Re: Profiling under Linux
From: |
Ignoramus11615 |
Subject: |
Re: Profiling under Linux |
Date: |
Thu, 05 Nov 2009 20:51:48 -0600 |
User-agent: |
slrn/pre1.0.0-2 (Linux) |
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