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
   8from __future__ import print_function
   9
  10import os
  11import sys
  12
  13sys.path.append(os.environ['PERF_EXEC_PATH'] + \
  14        '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
  15
  16from perf_trace_context import *
  17from Core import *
  18from Util import *
  19
  20usage = "perf script -s syscall-counts-by-pid.py [comm|pid]\n";
  21
  22for_comm = None
  23for_pid = None
  24
  25if len(sys.argv) > 2:
  26        sys.exit(usage)
  27
  28if len(sys.argv) > 1:
  29        try:
  30                for_pid = int(sys.argv[1])
  31        except:
  32                for_comm = sys.argv[1]
  33
  34syscalls = autodict()
  35
  36def trace_begin():
  37        print("Press control+C to stop and show the summary")
  38
  39def trace_end():
  40        print_error_totals()
  41
  42def 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
  55def 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
  60def 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))
  80