LXR linux/tools/perf/scripts/python/failed-syscalls-by-pid.py

   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