On Wed, Apr 20, 2016 at 04:21:17PM +0800, Wangnan (F) wrote: > > > On 2016/4/20 15:59, Jiri Olsa wrote: > >On Mon, Apr 18, 2016 at 02:55:29PM +0000, Wang Nan wrote: > >>Without this patch, the last output doesn't have timestamp appended if > >>--timestamp-filename is not explicitly provided. For example: > >> > >> # perf record -a --switch-output & > >> [1] 11224 > >> # kill -s SIGUSR2 11224 > >> [ perf record: dump data: Woken up 1 times ] > >> # [ perf record: Dump perf.data.2015122622372823 ] > >> > >> # fg > >> perf record -a --switch-output > >> ^C[ perf record: Woken up 1 times to write data ] > >> [ perf record: Captured and wrote 0.027 MB perf.data (540 samples) ] > >> > >> # ls -l > >> total 836 > >> -rw------- 1 root root 33256 Dec 26 22:37 perf.data <---- *Odd* > >> -rw------- 1 root root 817156 Dec 26 22:37 perf.data.2015122622372823 > >I'm getting this: > > > >[root@krava perf]# ./perf record -a --switch-output & > >[root@krava perf]# kill -s SIGUSR2 18974 > >[ perf record: dump data: Woken up 4 times ] > >[ perf record: Dump perf.data.2016042009574314 ] > > > >[root@krava perf]# ./perf report -i perf.data.2016042009574314 > >perf: Segmentation fault > >-------- backtrace -------- > >./perf[0x552b0b] > >/lib64/libc.so.6(+0x34a50)[0x7f711b434a50] > >/lib64/libc.so.6(strlen+0x2a)[0x7f711b48b33a] > >./perf(perf_hpp__reset_sort_width+0x4f)[0x4e9b1f] > >./perf[0x54b113] > >./perf(perf_evlist__tui_browse_hists+0x91)[0x551361] > >./perf(cmd_report+0x1a34)[0x434b44] > >./perf[0x485681] > >./perf(main+0x672)[0x424382] > >/lib64/libc.so.6(__libc_start_main+0xf0)[0x7f711b420700] > >./perf(_start+0x29)[0x4244a9] > >[0x0] > > Can't reproduce... Can you get reproduce problem without this patch (3/6)? > > My local tree is based on newest perf/core (commit ccd62a8 "perf trace: > Fix build when DWARF unwind isn't available"). Could you please check your > source?
you're right.. I rebuilt on latest Arnaldo's perf/core and can't reproduce again jirka
