Re: [PATCHv4 00/13] perf tools: Speedup DWARF unwind

[Namhyung Kim]

Hi Jiri,

On Wed,  4 Jun 2014 16:36:49 +0200, Jiri Olsa 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 ;-).
>
> On ~11GB perf data file with dwarf unwind data I've got
> around 30% speed up.
>
> I've also got possitive test feedback from Jean Pihet:
>   https://wiki.linaro.org/LEG/Engineering/TOOLS/perf-callstack-unwinding#Speed_improvement

For the series,

Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>

Thanks,
Namhyung
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