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

   1 # failed system call counts, by pid
   2 # (c) 2010, Tom Zanussi <[email protected]>
   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
  34 def trace_begin():
  35         print "Press control+C to stop and show the summary"
  36
  37 def trace_end():
  38         print_error_totals()
  39
  40 def raw_syscalls__sys_exit(event_name, context, common_cpu,
  41         common_secs, common_nsecs, common_pid, common_comm,
  42         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 print_error_totals():
  54     if for_comm is not None:
  55             print "\nsyscall errors for %s:\n\n" % (for_comm),
  56     else:
  57             print "\nsyscall errors:\n\n",
  58
  59     print "%-30s  %10s\n" % ("comm [pid]", "count"),
  60     print "%-30s  %10s\n" % ("------------------------------", \
  61                                  "----------"),
  62
  63     comm_keys = syscalls.keys()
  64     for comm in comm_keys:
  65             pid_keys = syscalls[comm].keys()
  66             for pid in pid_keys:
  67                     print "\n%s [%d]\n" % (comm, pid),
  68                     id_keys = syscalls[comm][pid].keys()
  69                     for id in id_keys:
  70                             print "  syscall: %-16s\n" % syscall_name(id),
  71                             ret_keys = syscalls[comm][pid][id].keys()
  72                             for ret, val in sorted(syscalls[comm][pid][id].iteritems(), key = lambda(k, v): (v, k),  reverse = True):
  73                                     print "    err = %-20s  %10d\n" % (strerror(ret), val),