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

   1 # system call counts
   2 # (c) 2010, Tom Zanussi <[email protected]>
   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
  17 usage = "perf trace -s syscall-counts.py [comm]\n";
  18
  19 for_comm = None
  20
  21 if len(sys.argv) > 2:
  22         sys.exit(usage)
  23
  24 if len(sys.argv) > 1:
  25         for_comm = sys.argv[1]
  26
  27 syscalls = autodict()
  28
  29 def trace_begin():
  30         pass
  31
  32 def trace_end():
  33         print_syscall_totals()
  34
  35 def raw_syscalls__sys_enter(event_name, context, common_cpu,
  36         common_secs, common_nsecs, common_pid, common_comm,
  37         id, args):
  38         if for_comm is not None:
  39                 if common_comm != for_comm:
  40                         return
  41         try:
  42                 syscalls[id] += 1
  43         except TypeError:
  44                 syscalls[id] = 1
  45
  46 def print_syscall_totals():
  47     if for_comm is not None:
  48             print "\nsyscall events for %s:\n\n" % (for_comm),
  49     else:
  50             print "\nsyscall events:\n\n",
  51
  52     print "%-40s  %10s\n" % ("event", "count"),
  53     print "%-40s  %10s\n" % ("----------------------------------------", \
  54                                  "-----------"),
  55
  56     for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \
  57                                   reverse = True):
  58             print "%-40d  %10d\n" % (id, val),