• David Ahern's avatar
    perf trace: Add summary option to dump syscall statistics · bf2575c1
    David Ahern authored
    When enabled dumps a summary of all syscalls by task with the usual
    statistics -- min, max, average and relative stddev. For example,
    
    make - 26341 :       3344   [ 17.4% ]      0.000 ms
    
                    read :   52    0.000     4.802     0.644   30.08
                   write :   20    0.004     0.036     0.010   21.72
                    open :   24    0.003     0.046     0.014   23.68
                   close :   64    0.002     0.055     0.008   22.53
                    stat : 2714    0.002     0.222     0.004    4.47
                   fstat :   18    0.001     0.041     0.006   46.26
                    mmap :   30    0.003     0.009     0.006    5.71
                mprotect :    8    0.006     0.039     0.016   32.16
                  munmap :   12    0.007     0.077     0.020   38.25
                     brk :   48    0.002     0.014     0.004   10.18
            rt_sigaction :   18    0.002     0.002     0.002    2.11
          rt_sigprocmask :   60    0.002     0.128     0.010   32.88
                  access :    2    0.006     0.006     0.006    0.00
                    pipe :   12    0.004     0.048     0.013   35.98
                   vfork :   34    0.448     0.980     0.692    3.04
                  execve :   20    0.000     0.387     0.046   56.66
                   wait4 :   34    0.017  9923.287   593.221   68.45
                   fcntl :    8    0.001     0.041     0.013   48.79
                getdents :   48    0.002     0.079     0.013   19.62
                  getcwd :    2    0.005     0.005     0.005    0.00
                   chdir :    2    0.070     0.070     0.070    0.00
               getrlimit :    2    0.045     0.045     0.045    0.00
              arch_prctl :    2    0.002     0.002     0.002    0.00
               setrlimit :    2    0.002     0.002     0.002    0.00
                  openat :   94    0.003     0.005     0.003    2.11
    Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: Ingo Molnar <mingo@kernel.org>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: Namhyung Kim <namhyung.kim@lge.com>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Stephane Eranian <eranian@google.com>
    Link: http://lkml.kernel.org/r/1381289214-24885-3-git-send-email-dsahern@gmail.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    bf2575c1
perf-trace.txt 2.49 KB