[oe] profiling howto?
Steffen Sledz
sledz at dresearch.de
Thu Feb 3 13:06:20 UTC 2011
Am 03.02.2011 13:14, schrieb Holger Freyther:
> On 02/03/2011 01:07 PM, Steffen Sledz wrote:
>
>> But i've no idea what the real problem is. It looks like it's not related to the ".init_array" but to the missing `mcount' symbol.
>
> This symbol access get added by gcc due the -pg option. Now the question is
> who should provide this symbol? I would assume it is glibc (actually grepping
> glibc source tree shows it is in gmon/mcount.c).
>
> I am not sure why you want to use gprof but anyway...
>
> a) do not use gprof on glibc...
I'm not interested in using gprof on glibc. I'm interested in profiling some other libs/apps only.
But the suggested method to prepare just some packages for profiling does not work jet (see other subthread).
So i tried the suggested method from local.conf.sample with the mentioned result. :(
> b) change the tests to have a mcount symbol...
Sorry, but i did not have time and knowledge to do this.
Steffen
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