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

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