tools/perf/scripts/python/syscall-counts.py

   1 # system call counts
   2 # (c) 2010, Tom Zanussi <tzanussi@gmail.com>
   3 # Licensed under the terms of the GNU GPL License version 2
   4 #
   5 # Displays system-wide system call totals, broken down by syscall.
   6 # If a [comm] arg is specified, only syscalls called by [comm] are displayed.
   7
   8 import os
   9 import sys
  10
  11 sys.path.append(os.environ['PERF_EXEC_PATH'] + \
  12         '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
  13
  14 from perf_trace_context import *
  15 from Core import *
  16 from Util import syscall_name
  17
  18 usage = "perf script -s syscall-counts.py [comm]\n";
  19
  20 for_comm = None
  21
  22 if len(sys.argv) > 2:
  23         sys.exit(usage)
  24
  25 if len(sys.argv) > 1:
  26         for_comm = sys.argv[1]
  27
  28 syscalls = autodict()
  29
  30 def trace_begin():
  31         print "Press control+C to stop and show the summary"
  32
  33 def trace_end():
  34         print_syscall_totals()
  35
  36 def raw_syscalls__sys_enter(event_name, context, common_cpu,
  37         common_secs, common_nsecs, common_pid, common_comm,
  38         id, args):
  39         if for_comm is not None:
  40                 if common_comm != for_comm:
  41                         return
  42         try:
  43                 syscalls[id] += 1
  44         except TypeError:
  45                 syscalls[id] = 1
  46
  47 def print_syscall_totals():
  48     if for_comm is not None:
  49             print "\nsyscall events for %s:\n\n" % (for_comm),
  50     else:
  51             print "\nsyscall events:\n\n",
  52
  53     print "%-40s  %10s\n" % ("event", "count"),
  54     print "%-40s  %10s\n" % ("----------------------------------------", \
  55                                  "-----------"),
  56
  57     for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \
  58                                   reverse = True):
  59             print "%-40s  %10d\n" % (syscall_name(id), val),