3 # Licensed under the terms of the GNU GPL License version 2
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
11 from __future__ import print_function
18 import _thread as thread
20 sys.path.append(os.environ['PERF_EXEC_PATH'] + \
21 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
23 from perf_trace_context import *
27 usage = "perf script -s sctop.py [comm] [interval]\n";
31 interval = default_interval
37 for_comm = sys.argv[1]
38 interval = int(sys.argv[2])
39 elif len(sys.argv) > 1:
41 interval = int(sys.argv[1])
43 for_comm = sys.argv[1]
44 interval = default_interval
49 thread.start_new_thread(print_syscall_totals, (interval,))
52 def 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:
63 def syscalls__sys_enter(event_name, context, common_cpu,
64 common_secs, common_nsecs, common_pid, common_comm,
66 raw_syscalls__sys_enter(**locals())
68 def print_syscall_totals(interval):
71 if for_comm is not None:
72 print("\nsyscall events for %s:\n" % (for_comm))
74 print("\nsyscall events:\n")
76 print("%-40s %10s" % ("event", "count"))
78 ("----------------------------------------",
81 for id, val in sorted(syscalls.items(),
82 key = lambda kv: (kv[1], kv[0]),
85 print("%-40s %10d" % (syscall_name(id), val))