Linux Perf
syscall-counts.py
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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 
31  print "Press control+C to stop and show the summary"
32 
33 def trace_end():
35 
36 def raw_syscalls__sys_enter(event_name, context, common_cpu,
37  common_secs, common_nsecs, common_pid, common_comm,
38  common_callchain, 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 syscalls__sys_enter(event_name, context, common_cpu,
48  common_secs, common_nsecs, common_pid, common_comm,
49  id, args):
50  raw_syscalls__sys_enter(**locals())
51 
53  if for_comm is not None:
54  print "\nsyscall events for %s:\n\n" % (for_comm),
55  else:
56  print "\nsyscall events:\n\n",
57 
58  print "%-40s %10s\n" % ("event", "count"),
59  print "%-40s %10s\n" % ("----------------------------------------", \
60  "-----------"),
61 
62  for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \
63  reverse = True):
64  print "%-40s %10d\n" % (syscall_name(id), val),
def syscalls__sys_enter(event_name, context, common_cpu, common_secs, common_nsecs, common_pid, common_comm, id, args)
def syscall_name(id)
Definition: Util.py:80
def autodict()
Definition: Core.py:11
def print_syscall_totals()
def raw_syscalls__sys_enter(event_name, context, common_cpu, common_secs, common_nsecs, common_pid, common_comm, common_callchain, id, args)