3 # Jailhouse, a Linux-based partitioning hypervisor
5 # Copyright (c) Siemens AG, 2014
8 # Jan Kiszka <jan.kiszka@siemens.com>
10 # This work is licensed under the terms of the GNU GPL, version 2. See
11 # the COPYING file in the top-level directory.
13 from __future__ import print_function
19 stats_dir = "/sys/devices/jailhouse/cells/%s/statistics"
22 def main(stdscr, cell, stats_names):
23 curses.use_default_colors()
27 value = dict.fromkeys(stats_names)
28 old_value = dict.fromkeys(stats_names, None)
30 now = datetime.datetime.now()
32 for name in stats_names:
33 f = open((stats_dir + "/%s") % (cell, name), "r")
34 value[name] = int(f.read())
37 if old_value[name] is None:
38 return (-value[name], name)
40 return (old_value[name] - value[name], -value[name], name)
43 stdscr.addstr(0, 0, "Statistics for %s cell" % cell)
44 (height, width) = stdscr.getmaxyx()
45 stdscr.hline(2, 0, " ", width, curses.A_REVERSE)
46 stdscr.addstr(2, 0, "COUNTER", curses.A_REVERSE)
47 stdscr.addstr(2, 30, "%10s" % "SUM", curses.A_REVERSE)
48 stdscr.addstr(2, 40, "%10s" % "PER SEC", curses.A_REVERSE)
50 for name in sorted(stats_names, key=sortkey):
51 stdscr.addstr(line, 0, name)
52 stdscr.addstr(line, 30, "%10u" % value[name])
53 if not old_value[name] is None:
54 dt = (now - last_refresh).total_seconds()
55 delta_per_sec = (value[name] - old_value[name]) / dt
56 stdscr.addstr(line, 40, "%10u" % round(delta_per_sec))
57 old_value[name] = value[name]
59 stdscr.hline(height - 1, 0, " ", width, curses.A_REVERSE)
60 stdscr.addstr(height - 1, 1, "Q - Quit", curses.A_REVERSE)
66 if stdscr.getch() == ord('q'):
69 except KeyboardInterrupt:
76 prog = os.path.basename(sys.argv[0]).replace('-', ' ')
77 print("usage: %s { ID | [--name] NAME }" % prog)
82 use_name = argc >= 2 and sys.argv[1] == "--name"
84 if argc < 2 or argc > 3 or (not use_name and argc > 2):
86 if sys.argv[1] in ("--help", "-h"):
91 cell_name = sys.argv[2]
93 cell_name = sys.argv[1]
95 cell_id = int(sys.argv[1])
96 for cell in os.listdir("/sys/devices/jailhouse/cells"):
97 f = open("/sys/devices/jailhouse/cells/%s/id" % cell, "r")
98 if int(f.read()) == cell_id:
104 stats_names = os.listdir(stats_dir % cell_name)
106 print("reading stats: %s" % e.strerror, file=sys.stderr)
109 curses.wrapper(main, cell_name, stats_names)