1# system call top 2# (c) 2010, Tom Zanussi <tzanussi@gmail.com> 3# Licensed under the terms of the GNU GPL License version 2 4# 5# Periodically displays system-wide system call totals, broken down by 6# syscall. If a [comm] arg is specified, only syscalls called by 7# [comm] are displayed. If an [interval] arg is specified, the display 8# will be refreshed every [interval] seconds. The default interval is 9# 3 seconds. 10 11import thread 12import time 13import os 14import sys 15 16sys.path.append(os.environ['PERF_EXEC_PATH'] + \ 17 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace') 18 19from perf_trace_context import * 20from Core import * 21from Util import * 22 23usage = "perf trace -s syscall-counts.py [comm] [interval]\n"; 24 25for_comm = None 26default_interval = 3 27interval = default_interval 28 29if len(sys.argv) > 3: 30 sys.exit(usage) 31 32if len(sys.argv) > 2: 33 for_comm = sys.argv[1] 34 interval = int(sys.argv[2]) 35elif len(sys.argv) > 1: 36 try: 37 interval = int(sys.argv[1]) 38 except ValueError: 39 for_comm = sys.argv[1] 40 interval = default_interval 41 42syscalls = autodict() 43 44def trace_begin(): 45 thread.start_new_thread(print_syscall_totals, (interval,)) 46 pass 47 48def raw_syscalls__sys_enter(event_name, context, common_cpu, 49 common_secs, common_nsecs, common_pid, common_comm, 50 id, args): 51 if for_comm is not None: 52 if common_comm != for_comm: 53 return 54 try: 55 syscalls[id] += 1 56 except TypeError: 57 syscalls[id] = 1 58 59def print_syscall_totals(interval): 60 while 1: 61 clear_term() 62 if for_comm is not None: 63 print "\nsyscall events for %s:\n\n" % (for_comm), 64 else: 65 print "\nsyscall events:\n\n", 66 67 print "%-40s %10s\n" % ("event", "count"), 68 print "%-40s %10s\n" % ("----------------------------------------", \ 69 "----------"), 70 71 for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \ 72 reverse = True): 73 try: 74 print "%-40d %10d\n" % (id, val), 75 except TypeError: 76 pass 77 syscalls.clear() 78 time.sleep(interval) 79