Messages in this thread | | | Date | Fri, 18 Apr 2014 09:51:48 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 0/3] perf tools: Speedup DWARF unwind |
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* Jiri Olsa <jolsa@redhat.com> wrote:
> hi, > trying to speedup DWARF unwind report code by factoring > related code: > - caching sample's registers access > - keep dso data file descriptor open for the > life of the dso object > - replace dso cache code by mapping dso data file > directly for the life of the dso object > > The speedup is mainly for libunwind unwind. The libdw will benefit > mainly from cached registers access, because it handles dso data > accesses by itself.. and anyway it's still faster ;-).
Just curious: do you have any numbers about how much faster it got in practice?
Thanks,
Ingo
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