Messages in this thread | | | Date | Wed, 20 Apr 2016 09:59:45 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH v5 3/6] perf record: Force enable --timestamp-filename when --switch-output is provided |
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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]
thanks, jirka
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