Re: Wrong Perf Backtraces

Milian Wolff <[email protected]>
Newsgroups org.kernel.vger.linux-trace-users
Organization KDAB
Message-ID <1867036.PIDvDuAF1L@agathebauer>
On Sonntag, 29. März 2020 14:39:33 CEST ahmadkhorrami wrote:
> Thanks. I did both of your changes. Perhaps some outputs are revised.
> But I still have repeated function calls and the script detects them.
> Here is one of them when the sampling period is 1000 events:

<snip>

> Here, we have two consecutive "7f91788120b5
> gtk_widget_propagate_state+0x195
> (/usr/lib/x86_64-linux-gnu/libgtk-3.so.0.2200.30) gtkwidget.c:0" lines,
> while "gtk_widget_propagate_state+0x195" is not recursive. It should
> call "gtk_container_forall", which does not occur even after the second
> (inner) call.

Potentially you are just lacking some debug symbols here for this GTK library. 
note that "gtkwidget.c:0" is bogus already - the line numbers start with 1, so 
a line of 0 reported indicates a lack of (full) debug information for this 
file.

Cheers

-- 
Milian Wolff | [email protected] | Senior Software Engineer
KDAB (Deutschland) GmbH, a KDAB Group company
Tel: +49-30-521325470
KDAB - The Qt, C++ and OpenGL Experts
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