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 from __future__ import print_function
   9
  10 import os
  11 import sys
  12
  13 sys.path.append(os.environ['PERF_EXEC_PATH'] + \
  14         '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
  15
  16 from perf_trace_context import *
  17 from Core import *
  18 from Util import syscall_name
  19
  20 usage = "perf script -s syscall-counts.py [comm]\n";
  21
  22 for_comm = None
  23
  24 if len(sys.argv) > 2:
  25         sys.exit(usage)
  26
  27 if len(sys.argv) > 1:
  28         for_comm = sys.argv[1]
  29
  30 syscalls = autodict()
  31
  32 def trace_begin():
  33         print("Press control+C to stop and show the summary")
  34
  35 def trace_end():
  36         print_syscall_totals()
  37
  38 def raw_syscalls__sys_enter(event_name, context, common_cpu,
  39                 common_secs, common_nsecs, common_pid, common_comm,
  40                 common_callchain, id, args):
  41         if for_comm is not None:
  42                 if common_comm != for_comm:
  43                         return
  44         try:
  45                 syscalls[id] += 1
  46         except TypeError:
  47                 syscalls[id] = 1
  48
  49 def syscalls__sys_enter(event_name, context, common_cpu,
  50                 common_secs, common_nsecs, common_pid, common_comm, id, args):
  51         raw_syscalls__sys_enter(**locals())
  52
  53 def print_syscall_totals():
  54         if for_comm is not None:
  55                 print("\nsyscall events for %s:\n" % (for_comm))
  56         else:
  57                 print("\nsyscall events:\n")
  58
  59         print("%-40s  %10s" % ("event", "count"))
  60         print("%-40s  %10s" % ("----------------------------------------",
  61                                 "-----------"))
  62
  63         for id, val in sorted(syscalls.items(),
  64                         key = lambda kv: (kv[1], kv[0]), reverse = True):
  65                 print("%-40s  %10d" % (syscall_name(id), val))