Re: Wrong Perf Backtraces

Jiri Olsa <[email protected]>
Newsgroups org.kernel.vger.linux-trace-users
Message-ID <20200325154643.GA1934048@krava>
On Wed, Mar 25, 2020 at 07:48:39PM +0430, ahmadkhorrami wrote:
> Hi,
> 
> Could you give me some hints about where the actual problem takes place? Is
> the problem with "Perf" or the hardware part (i.e., "Hardware Performance
> Counters")? Can I revise the problem by simply modifying the code? How much
> work is needed?

heya,
might be some callchain processing bug, but I can't reproduce it on my setup..
would you have/make some simple example that would reproduce the issue?

Another option is that you'd send perf.data together with 'perf archive' data.

Also.. we support 2 dwarf unwinders (libunwind/libdw).. not sure which one you
have compiled in, but would be helpful to see if the other shows the same.

jirka
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