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
11 from __future__ import print_function
12
13 import os, sys, time
14
15 try:
16 import thread
17 except ImportError:
18 import _thread as thread
19
20 sys.path.append(os.environ['PERF_EXEC_PATH'] + \
21 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
22
23 from perf_trace_context import *
24 from Core import *
25 from Util import *
26
27 usage = "perf script -s sctop.py [comm] [interval]\n";
28
29 for_comm = None
30 default_interval = 3
31 interval = default_interval
32
33 if len(sys.argv) > 3:
34 sys.exit(usage)
35
36 if len(sys.argv) > 2:
37 for_comm = sys.argv[1]
38 interval = int(sys.argv[2])
39 elif len(sys.argv) > 1:
40 try:
41 interval = int(sys.argv[1])
42 except ValueError:
43 for_comm = sys.argv[1]
44 interval = default_interval
45
46 syscalls = autodict()
47
48 def trace_begin():
49 thread.start_new_thread(print_syscall_totals, (interval,))
50 pass
51
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:
57 return
58 try:
59 syscalls[id] += 1
60 except TypeError:
61 syscalls[id] = 1
62
63 def 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
68 def 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 pass
88 syscalls.clear()
89 time.sleep(interval)
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