Re: [arm-gnu] Problem in using GPROF

[Carlos O'Donell <carlos@xxxxxxxxxxxxxxxx>]

Jayant Sonar wrote:
> Hi,
>
> I am using ARM toolchain 2008q1 (GCC-4.2.3) to compile my application
> for my OMAP3430 target hardware.
>
> I am trying to use GPROF utility to get profiling information about
> my application. I compile my application using following command -
>
> arm-linux-gcc *.c -g -pg -fpack-struct
This doesn't look like a CodeSourcery toolchain? What does arm-linux-gcc 
 -v say?
> The generated output file when executed on hardware runs properly and
> generates gmon.out also. When GPROF is used to generate the profiling
> information from this gmon.out, the generated information shows
> appropriate number of calls made for each function.
> However all the time related columns - % time, cumulative seconds,
> self seconds etc - has only ZERO value everywhere.
>
> The information line at the top of generated profile says -
>      Each sample counts as 0.01 seconds.
>      no time accumulated
>
> I have commented all "clock()" or "gettimeofday()" function calls as
> I read somewhere that they could cause inappropriate time information
> generation. But still what i am getting is all time fields flooded
> with zero values.
>
> What could be the problem??
> My target OS has GLIBC-2.5.
Your should install the CodeSourcery Sourcery G++ ARM GNU/Linux 
libraries on the target, and you should be using them when you run your 
application (either at build-time via -rpath/--dyanmic-linker or with 
LD_LIBRARY_PATH at runtime).
Cheers,
Carlos.
--
Carlos O'Donell
CodeSourcery
carlos@xxxxxxxxxxxxxxxx
(650) 331-3385 x716