Re: [PATCH 0/3] perf tools: Speedup DWARF unwind

[Jiri Olsa]

On Thu, Apr 17, 2014 at 07:39:09PM +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 ;-).
> 
> Also reachable in here:
>   git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>   perf/core_unwind_speedup

rebased to latest tip perf/core, review appreciated ;-)

jirka
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