On Tue, Sep 23, 2014 at 9:28 PM, Jiri Olsa <jo...@redhat.com> wrote: > On Tue, Sep 23, 2014 at 03:30:28PM +0900, Namhyung Kim wrote: >> The libunwind provides two caching policy which are global and >> per-thread. As perf unwinds callchains in a single thread, it'd >> sufficient to use global caching. >> >> This speeds up my perf report from 14s to 7s on a ~260MB data file. >> Although the output contains a slight difference (~0.01% in terms of >> number of lines printed) on callchains which were not resolved. > > hum, the speedup is nice, but what was the diff output.. any example? > The new version does not print some lines or different ones?
I don't have the result now - will post the diff when I go to the office tomorrow. But IIRC new version only adds new lines.. 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/