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         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
  58 def 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),