perf trace: Sort syscalls stats by msecs in --summary
# trace -a -s sleep 1
<SNIP>
Xorg (1965), 788 events, 19.0%, 0.000 msec
syscall calls total min avg max stddev
(msec) (msec) (msec) (msec) (%)
--------------- -------- --------- --------- --------- --------- ------
select 89 731.038 0.000 8.214 175.218 36.71%
ioctl 22 0.661 0.010 0.030 0.072 10.43%
writev 42 0.253 0.002 0.006 0.011 5.94%
recvmsg 60 0.185 0.001 0.003 0.009 5.90%
setitimer 60 0.127 0.001 0.002 0.006 6.14%
read 52 0.102 0.001 0.002 0.005 8.55%
rt_sigprocmask 45 0.092 0.001 0.002 0.023 23.65%
poll 12 0.021 0.001 0.002 0.003 7.21%
epoll_wait 12 0.019 0.001 0.002 0.002 2.71%
firefox (10871), 1080 events, 26.1%, 0.000 msec
syscall calls total min avg max stddev
(msec) (msec) (msec) (msec) (%)
--------------- -------- --------- --------- --------- --------- ------
poll 240 979.562 0.000 4.082 17.132 11.33%
recvmsg 240 0.532 0.001 0.002 0.007 3.69%
read 60 0.303 0.003 0.005 0.029 8.50%
Suggested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-52kdkuyxihq0kvc0n2aalhay@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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