On Fri, Nov 28, 2014 at 04:14:19PM +0900, Namhyung Kim wrote: > After perf record finishes, it prints file size and number of samples > in the file but this info is wrong since it assumes typical sample > size of 24 bytes and divides file size by the value. > > However as we post-process recorded samples for build-id, it can show > correct number like below. If build-id post-processing is not requested > just omit the wrong number of samples. > > $ perf record noploop 1 > [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.159 MB perf.data (3989 samples) ] > > $ perf report --stdio -n > # To display the perf.data header info, please use --header/--header-only > options. > # > # Samples: 3K of event 'cycles' > # Event count (approx.): 3771330663 > # > # Overhead Samples Command Shared Object Symbol > # ........ ............ ....... ................ > .......................... > # > 99.90% 3982 noploop noploop [.] main > 0.09% 1 noploop ld-2.17.so [.] > _dl_check_map_versions > 0.01% 1 noploop [kernel.vmlinux] [k] setup_arg_pages > 0.00% 5 noploop [kernel.vmlinux] [k] > intel_pmu_enable_all > > Reported-by: Milian Wolff <m...@milianw.de> > Signed-off-by: Namhyung Kim <namhy...@kernel.org>
eeeey great, I mean.. finally ;-) Reviewed-by: Jiri Olsa <jo...@kernel.org> thanks, jirka -- 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/
