Re: Profiling under Linux

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#107

From: Jiří Paleček
Date: Thu, 05 Nov 2009 23:48

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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.

Regards
     Jiri Palecek

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From: Jiří Paleček <jpalecek@web.de>
Newsgroups: alt.os.linux.ubuntu,comp.lang.c++,gnu.g++.help
Subject: Re: Profiling under Linux
Date: Fri, 06 Nov 2009 00:48:14 +0100
Organization: Czech Technical University
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