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 <namhy...@kernel.org> Thanks, Namhyung -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
