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 from __future__ import print_function
   9
  10 import os
  11 import sys
  12
  13 sys.path.append(os.environ['PERF_EXEC_PATH'] + \
  14         '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
  15
  16 from perf_trace_context import *
  17 from Core import *
  18 from Util import *
  19
  20 usage = "perf script -s syscall-counts-by-pid.py [comm|pid]\n";
  21
  22 for_comm = None
  23 for_pid = None
  24
  25 if len(sys.argv) > 2:
  26         sys.exit(usage)
  27
  28 if len(sys.argv) > 1:
  29         try:
  30                 for_pid = int(sys.argv[1])
  31         except:
  32                 for_comm = sys.argv[1]
  33
  34 syscalls = autodict()
  35
  36 def trace_begin():
  37         print("Press control+C to stop and show the summary")
  38
  39 def trace_end():
  40         print_error_totals()
  41
  42 def 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
  55 def 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
  60 def 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))