xref: /linux/tools/perf/scripts/python/failed-syscalls-by-pid.py (revision ca55b2fef3a9373fcfc30f82fd26bc7fccbda732) 
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
8import os
9import sys
10
11sys.path.append(os.environ['PERF_EXEC_PATH'] + \
12	'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
13
14from perf_trace_context import *
15from Core import *
16from Util import *
17
18usage = "perf script -s syscall-counts-by-pid.py [comm|pid]\n";
19
20for_comm = None
21for_pid = None
22
23if len(sys.argv) > 2:
24	sys.exit(usage)
25
26if len(sys.argv) > 1:
27	try:
28		for_pid = int(sys.argv[1])
29	except:
30		for_comm = sys.argv[1]
31
32syscalls = autodict()
33
34def trace_begin():
35	print "Press control+C to stop and show the summary"
36
37def trace_end():
38	print_error_totals()
39
40def 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
53def 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
58def print_error_totals():
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),
79