Quelle  failed-syscalls-by-pid.py   Sprache: Python

# failed system call counts, by pid
# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
# Licensed under the terms of the GNU GPL License version 2
#
# Displays system-wide failed system call totals, broken down by pid.
# If a [comm] arg is specified, only syscalls called by [comm] are displayed.

from __future__ import print_function

import os
import sys

sys.path.append(os.environ['PERF_EXEC_PATH'] + \
 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')

from perf_trace_context import *
from Core import *
from Util import *

usage = "perf script -s syscall-counts-by-pid.py [comm|pid]\n";

for_comm = None
for_pid = None

if len(sys.argv) > 2:
 sys.exit(usage)

if len(sys.argv) > 1:
 try:
  for_pid = int(sys.argv[1])
 except:
  for_comm = sys.argv[1]

syscalls = autodict()

def trace_begin():
 print("Press control+C to stop and show the summary")

def trace_end():
 print_error_totals()

def raw_syscalls__sys_exit(event_name, context, common_cpu,
 common_secs, common_nsecs, common_pid, common_comm,
 common_callchain, id, ret):
 if (for_comm and common_comm != for_comm) or \
    (for_pid  and common_pid  != for_pid ):
  return

 if ret < 0:
  try:
   syscalls[common_comm][common_pid][id][ret] += 1
  except TypeError:
   syscalls[common_comm][common_pid][id][ret] = 1

def syscalls__sys_exit(event_name, context, common_cpu,
 common_secs, common_nsecs, common_pid, common_comm,
 id, ret):
 raw_syscalls__sys_exit(**locals())

def print_error_totals():
 if for_comm is not None:
  print("\nsyscall errors for %s:\n" % (for_comm))
 else:
  print("\nsyscall errors:\n")

 print("%-30s %10s" % ("comm [pid]", "count"))
 print("%-30s %10s" % ("------------------------------", "----------"))

 comm_keys = syscalls.keys()
 for comm in comm_keys:
  pid_keys = syscalls[comm].keys()
  for pid in pid_keys:
   print("\n%s [%d]" % (comm, pid))
   id_keys = syscalls[comm][pid].keys()
   for id in id_keys:
    print(" syscall: %-16s" % syscall_name(id))
    ret_keys = syscalls[comm][pid][id].keys()
    for ret, val in sorted(syscalls[comm][pid][id].items(), key = lambda kv: (kv[1], kv[0]), reverse = True):
     print(" err = %-20s %10d" % (strerror(ret), val))