* Ingo Molnar <mi...@kernel.org> wrote:
>
> * Jiri Olsa <jo...@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?
Oh, the numbers are all in the changelogs, never mind!
So in your test workload it went from 54.6 seconds to 36.7, a 48%
speedup :-)
Thanks,
Ingo
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