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

   1 # system call counts, by pid
   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 from __future__ import print_function
   9
  10 import os, sys
  11
  12 sys.path.append(os.environ['PERF_EXEC_PATH'] + \
  13         '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
  14
  15 from perf_trace_context import *
  16 from Core import *
  17 from Util import syscall_name
  18
  19 usage = "perf script -s syscall-counts-by-pid.py [comm]\n";
  20
  21 for_comm = None
  22 for_pid = None
  23
  24 if len(sys.argv) > 2:
  25         sys.exit(usage)
  26
  27 if len(sys.argv) > 1:
  28         try:
  29                 for_pid = int(sys.argv[1])
  30         except:
  31                 for_comm = sys.argv[1]
  32
  33 syscalls = autodict()
  34
  35 def trace_begin():
  36         print("Press control+C to stop and show the summary")
  37
  38 def trace_end():
  39         print_syscall_totals()
  40
  41 def raw_syscalls__sys_enter(event_name, context, common_cpu,
  42                 common_secs, common_nsecs, common_pid, common_comm,
  43                 common_callchain, id, args):
  44         if (for_comm and common_comm != for_comm) or \
  45                 (for_pid and common_pid != for_pid ):
  46                 return
  47         try:
  48                 syscalls[common_comm][common_pid][id] += 1
  49         except TypeError:
  50                 syscalls[common_comm][common_pid][id] = 1
  51
  52 def syscalls__sys_enter(event_name, context, common_cpu,
  53                 common_secs, common_nsecs, common_pid, common_comm,
  54                 id, args):
  55         raw_syscalls__sys_enter(**locals())
  56
  57 def print_syscall_totals():
  58         if for_comm is not None:
  59                 print("\nsyscall events for %s:\n" % (for_comm))
  60         else:
  61                 print("\nsyscall events by comm/pid:\n")
  62
  63         print("%-40s  %10s" % ("comm [pid]/syscalls", "count"))
  64         print("%-40s  %10s" % ("----------------------------------------",
  65                                 "----------"))
  66
  67         comm_keys = syscalls.keys()
  68         for comm in comm_keys:
  69                 pid_keys = syscalls[comm].keys()
  70                 for pid in pid_keys:
  71                         print("\n%s [%d]" % (comm, pid))
  72                         id_keys = syscalls[comm][pid].keys()
  73                         for id, val in sorted(syscalls[comm][pid].items(),
  74                                 key = lambda kv: (kv[1], kv[0]), reverse = True):
  75                                 print("  %-38s  %10d" % (syscall_name(id), val))