Quelle  syscall-counts.py   Sprache: Python

# system call counts
# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
# Licensed under the terms of the GNU GPL License version 2
#
# Displays system-wide system call totals, broken down by syscall.
# 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 syscall_name

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

for_comm = None

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

if len(sys.argv) > 1:
 for_comm = sys.argv[1]

syscalls = autodict()

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

def trace_end():
 print_syscall_totals()

def raw_syscalls__sys_enter(event_name, context, common_cpu,
  common_secs, common_nsecs, common_pid, common_comm,
  common_callchain, id, args):
 if for_comm is not None:
  if common_comm != for_comm:
   return
 try:
  syscalls[id] += 1
 except TypeError:
  syscalls[id] = 1

def syscalls__sys_enter(event_name, context, common_cpu,
  common_secs, common_nsecs, common_pid, common_comm, id, args):
 raw_syscalls__sys_enter(**locals())

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

 print("%-40s %10s" % ("event", "count"))
 print("%-40s %10s" % ("----------------------------------------",
    "-----------"))

 for id, val in sorted(syscalls.items(),
   key = lambda kv: (kv[1], kv[0]), reverse = True):
  print("%-40s %10d" % (syscall_name(id), val))