Linux Perf
failed-syscalls-by-pid.py
Go to the documentation of this file.
1 # failed 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 failed system call totals, broken down by pid.
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 *
17 
18 usage = "perf script -s syscall-counts-by-pid.py [comm|pid]\n";
19 
20 for_comm = None
21 for_pid = None
22 
23 if len(sys.argv) > 2:
24  sys.exit(usage)
25 
26 if len(sys.argv) > 1:
27  try:
28  for_pid = int(sys.argv[1])
29  except:
30  for_comm = sys.argv[1]
31 
32 syscalls = autodict()
33 
35  print "Press control+C to stop and show the summary"
36 
37 def trace_end():
39 
40 def raw_syscalls__sys_exit(event_name, context, common_cpu,
41  common_secs, common_nsecs, common_pid, common_comm,
42  common_callchain, id, ret):
43  if (for_comm and common_comm != for_comm) or \
44  (for_pid and common_pid != for_pid ):
45  return
46 
47  if ret < 0:
48  try:
49  syscalls[common_comm][common_pid][id][ret] += 1
50  except TypeError:
51  syscalls[common_comm][common_pid][id][ret] = 1
52 
53 def syscalls__sys_exit(event_name, context, common_cpu,
54  common_secs, common_nsecs, common_pid, common_comm,
55  id, ret):
56  raw_syscalls__sys_exit(**locals())
57 
59  if for_comm is not None:
60  print "\nsyscall errors for %s:\n\n" % (for_comm),
61  else:
62  print "\nsyscall errors:\n\n",
63 
64  print "%-30s %10s\n" % ("comm [pid]", "count"),
65  print "%-30s %10s\n" % ("------------------------------", \
66  "----------"),
67 
68  comm_keys = syscalls.keys()
69  for comm in comm_keys:
70  pid_keys = syscalls[comm].keys()
71  for pid in pid_keys:
72  print "\n%s [%d]\n" % (comm, pid),
73  id_keys = syscalls[comm][pid].keys()
74  for id in id_keys:
75  print " syscall: %-16s\n" % syscall_name(id),
76  ret_keys = syscalls[comm][pid][id].keys()
77  for ret, val in sorted(syscalls[comm][pid][id].iteritems(), key = lambda(k, v): (v, k), reverse = True):
78  print " err = %-20s %10d\n" % (strerror(ret), val),
struct lock_key keys[]
Definition: builtin-lock.c:252
def strerror(nr)
Definition: Util.py:86
def syscalls__sys_exit(event_name, context, common_cpu, common_secs, common_nsecs, common_pid, common_comm, id, ret)
def syscall_name(id)
Definition: Util.py:80
def raw_syscalls__sys_exit(event_name, context, common_cpu, common_secs, common_nsecs, common_pid, common_comm, common_callchain, id, ret)
def autodict()
Definition: Core.py:11