90 lines · python
1# system call top2# (c) 2010, Tom Zanussi <tzanussi@gmail.com>3# Licensed under the terms of the GNU GPL License version 24#5# Periodically displays system-wide system call totals, broken down by6# syscall. If a [comm] arg is specified, only syscalls called by7# [comm] are displayed. If an [interval] arg is specified, the display8# will be refreshed every [interval] seconds. The default interval is9# 3 seconds.10 11from __future__ import print_function12 13import os, sys, time14 15try:16 import thread17except ImportError:18 import _thread as thread19 20sys.path.append(os.environ['PERF_EXEC_PATH'] + \21 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')22 23from perf_trace_context import *24from Core import *25from Util import *26 27usage = "perf script -s sctop.py [comm] [interval]\n";28 29for_comm = None30default_interval = 331interval = default_interval32 33if len(sys.argv) > 3:34 sys.exit(usage)35 36if len(sys.argv) > 2:37 for_comm = sys.argv[1]38 interval = int(sys.argv[2])39elif len(sys.argv) > 1:40 try:41 interval = int(sys.argv[1])42 except ValueError:43 for_comm = sys.argv[1]44 interval = default_interval45 46syscalls = autodict()47 48def trace_begin():49 thread.start_new_thread(print_syscall_totals, (interval,))50 pass51 52def raw_syscalls__sys_enter(event_name, context, common_cpu,53 common_secs, common_nsecs, common_pid, common_comm,54 common_callchain, id, args):55 if for_comm is not None:56 if common_comm != for_comm:57 return58 try:59 syscalls[id] += 160 except TypeError:61 syscalls[id] = 162 63def syscalls__sys_enter(event_name, context, common_cpu,64 common_secs, common_nsecs, common_pid, common_comm,65 id, args):66 raw_syscalls__sys_enter(**locals())67 68def print_syscall_totals(interval):69 while 1:70 clear_term()71 if for_comm is not None:72 print("\nsyscall events for %s:\n" % (for_comm))73 else:74 print("\nsyscall events:\n")75 76 print("%-40s %10s" % ("event", "count"))77 print("%-40s %10s" %78 ("----------------------------------------",79 "----------"))80 81 for id, val in sorted(syscalls.items(),82 key = lambda kv: (kv[1], kv[0]),83 reverse = True):84 try:85 print("%-40s %10d" % (syscall_name(id), val))86 except TypeError:87 pass88 syscalls.clear()89 time.sleep(interval)90