xref: /linux/tools/perf/scripts/python/failed-syscalls-by-pid.py (revision 597473720f4dc69749542bfcfed4a927a43d935e) 
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
8from __future__ import print_function
9
10import os
11import sys
12
13sys.path.append(os.environ['PERF_EXEC_PATH'] + \
14	'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
15
16from perf_trace_context import *
17from Core import *
18from Util import *
19
20usage = "perf script -s syscall-counts-by-pid.py [comm|pid]\n";
21
22for_comm = None
23for_pid = None
24
25if len(sys.argv) > 2:
26	sys.exit(usage)
27
28if len(sys.argv) > 1:
29	try:
30		for_pid = int(sys.argv[1])
31	except:
32		for_comm = sys.argv[1]
33
34syscalls = autodict()
35
36def trace_begin():
37	print("Press control+C to stop and show the summary")
38
39def trace_end():
40	print_error_totals()
41
42def raw_syscalls__sys_exit(event_name, context, common_cpu,
43	common_secs, common_nsecs, common_pid, common_comm,
44	common_callchain, id, ret):
45	if (for_comm and common_comm != for_comm) or \
46	   (for_pid  and common_pid  != for_pid ):
47		return
48
49	if ret < 0:
50		try:
51			syscalls[common_comm][common_pid][id][ret] += 1
52		except TypeError:
53			syscalls[common_comm][common_pid][id][ret] = 1
54
55def syscalls__sys_exit(event_name, context, common_cpu,
56	common_secs, common_nsecs, common_pid, common_comm,
57	id, ret):
58	raw_syscalls__sys_exit(**locals())
59
60def print_error_totals():
61	if for_comm is not None:
62		print("\nsyscall errors for %s:\n" % (for_comm))
63	else:
64		print("\nsyscall errors:\n")
65
66	print("%-30s  %10s" % ("comm [pid]", "count"))
67	print("%-30s  %10s" % ("------------------------------", "----------"))
68
69	comm_keys = syscalls.keys()
70	for comm in comm_keys:
71		pid_keys = syscalls[comm].keys()
72		for pid in pid_keys:
73			print("\n%s [%d]" % (comm, pid))
74			id_keys = syscalls[comm][pid].keys()
75			for id in id_keys:
76				print("  syscall: %-16s" % syscall_name(id))
77				ret_keys = syscalls[comm][pid][id].keys()
78				for ret, val in sorted(syscalls[comm][pid][id].items(), key = lambda kv: (kv[1], kv[0]), reverse = True):
79					print("    err = %-20s  %10d" % (strerror(ret), val))
80