python/psutil/examples/nettop.py@6474c204b198 (annotated)
python/psutil/examples/nettop.py
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rwxr-xr-x
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | #!/usr/bin/env python |
| michael@0 | 2 | # |
| michael@0 | 3 | # $Id: iotop.py 1160 2011-10-14 18:50:36Z g.rodola@gmail.com $ |
| michael@0 | 4 | # |
| michael@0 | 5 | # Copyright (c) 2009, Giampaolo Rodola'. All rights reserved. |
| michael@0 | 6 | # Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 7 | # found in the LICENSE file. |
| michael@0 | 8 | |
| michael@0 | 9 | """ |
| michael@0 | 10 | Shows real-time network statistics. |
| michael@0 | 11 | |
| michael@0 | 12 | Author: Giampaolo Rodola' <g.rodola@gmail.com> |
| michael@0 | 13 | """ |
| michael@0 | 14 | |
| michael@0 | 15 | import sys |
| michael@0 | 16 | import os |
| michael@0 | 17 | if os.name != 'posix': |
| michael@0 | 18 | sys.exit('platform not supported') |
| michael@0 | 19 | import curses |
| michael@0 | 20 | import atexit |
| michael@0 | 21 | import time |
| michael@0 | 22 | |
| michael@0 | 23 | import psutil |
| michael@0 | 24 | |
| michael@0 | 25 | |
| michael@0 | 26 | # --- curses stuff |
| michael@0 | 27 | def tear_down(): |
| michael@0 | 28 | win.keypad(0) |
| michael@0 | 29 | curses.nocbreak() |
| michael@0 | 30 | curses.echo() |
| michael@0 | 31 | curses.endwin() |
| michael@0 | 32 | |
| michael@0 | 33 | win = curses.initscr() |
| michael@0 | 34 | atexit.register(tear_down) |
| michael@0 | 35 | curses.endwin() |
| michael@0 | 36 | lineno = 0 |
| michael@0 | 37 | |
| michael@0 | 38 | def print_line(line, highlight=False): |
| michael@0 | 39 | """A thin wrapper around curses's addstr().""" |
| michael@0 | 40 | global lineno |
| michael@0 | 41 | try: |
| michael@0 | 42 | if highlight: |
| michael@0 | 43 | line += " " * (win.getmaxyx()[1] - len(line)) |
| michael@0 | 44 | win.addstr(lineno, 0, line, curses.A_REVERSE) |
| michael@0 | 45 | else: |
| michael@0 | 46 | win.addstr(lineno, 0, line, 0) |
| michael@0 | 47 | except curses.error: |
| michael@0 | 48 | lineno = 0 |
| michael@0 | 49 | win.refresh() |
| michael@0 | 50 | raise |
| michael@0 | 51 | else: |
| michael@0 | 52 | lineno += 1 |
| michael@0 | 53 | # --- curses stuff |
| michael@0 | 54 | |
| michael@0 | 55 | |
| michael@0 | 56 | def bytes2human(n): |
| michael@0 | 57 | """ |
| michael@0 | 58 | >>> bytes2human(10000) |
| michael@0 | 59 | '9.8 K' |
| michael@0 | 60 | >>> bytes2human(100001221) |
| michael@0 | 61 | '95.4 M' |
| michael@0 | 62 | """ |
| michael@0 | 63 | symbols = ('K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y') |
| michael@0 | 64 | prefix = {} |
| michael@0 | 65 | for i, s in enumerate(symbols): |
| michael@0 | 66 | prefix[s] = 1 << (i+1)*10 |
| michael@0 | 67 | for s in reversed(symbols): |
| michael@0 | 68 | if n >= prefix[s]: |
| michael@0 | 69 | value = float(n) / prefix[s] |
| michael@0 | 70 | return '%.2f %s' % (value, s) |
| michael@0 | 71 | return '%.2f B' % (n) |
| michael@0 | 72 | |
| michael@0 | 73 | def poll(interval): |
| michael@0 | 74 | """Retrieve raw stats within an interval window.""" |
| michael@0 | 75 | tot_before = psutil.net_io_counters() |
| michael@0 | 76 | pnic_before = psutil.net_io_counters(pernic=True) |
| michael@0 | 77 | # sleep some time |
| michael@0 | 78 | time.sleep(interval) |
| michael@0 | 79 | tot_after = psutil.net_io_counters() |
| michael@0 | 80 | pnic_after = psutil.net_io_counters(pernic=True) |
| michael@0 | 81 | return (tot_before, tot_after, pnic_before, pnic_after) |
| michael@0 | 82 | |
| michael@0 | 83 | |
| michael@0 | 84 | def refresh_window(tot_before, tot_after, pnic_before, pnic_after): |
| michael@0 | 85 | """Print stats on screen.""" |
| michael@0 | 86 | global lineno |
| michael@0 | 87 | |
| michael@0 | 88 | # totals |
| michael@0 | 89 | print_line("total bytes: sent: %-10s received: %s" \ |
| michael@0 | 90 | % (bytes2human(tot_after.bytes_sent), |
| michael@0 | 91 | bytes2human(tot_after.bytes_recv)) |
| michael@0 | 92 | ) |
| michael@0 | 93 | print_line("total packets: sent: %-10s received: %s" \ |
| michael@0 | 94 | % (tot_after.packets_sent, tot_after.packets_recv) |
| michael@0 | 95 | ) |
| michael@0 | 96 | |
| michael@0 | 97 | |
| michael@0 | 98 | # per-network interface details: let's sort network interfaces so |
| michael@0 | 99 | # that the ones which generated more traffic are shown first |
| michael@0 | 100 | print_line("") |
| michael@0 | 101 | nic_names = list(pnic_after.keys()) |
| michael@0 | 102 | nic_names.sort(key=lambda x: sum(pnic_after[x]), reverse=True) |
| michael@0 | 103 | for name in nic_names: |
| michael@0 | 104 | stats_before = pnic_before[name] |
| michael@0 | 105 | stats_after = pnic_after[name] |
| michael@0 | 106 | templ = "%-15s %15s %15s" |
| michael@0 | 107 | print_line(templ % (name, "TOTAL", "PER-SEC"), highlight=True) |
| michael@0 | 108 | print_line(templ % ( |
| michael@0 | 109 | "bytes-sent", |
| michael@0 | 110 | bytes2human(stats_after.bytes_sent), |
| michael@0 | 111 | bytes2human(stats_after.bytes_sent - stats_before.bytes_sent) + '/s', |
| michael@0 | 112 | )) |
| michael@0 | 113 | print_line(templ % ( |
| michael@0 | 114 | "bytes-recv", |
| michael@0 | 115 | bytes2human(stats_after.bytes_recv), |
| michael@0 | 116 | bytes2human(stats_after.bytes_recv - stats_before.bytes_recv) + '/s', |
| michael@0 | 117 | )) |
| michael@0 | 118 | print_line(templ % ( |
| michael@0 | 119 | "pkts-sent", |
| michael@0 | 120 | stats_after.packets_sent, |
| michael@0 | 121 | stats_after.packets_sent - stats_before.packets_sent, |
| michael@0 | 122 | )) |
| michael@0 | 123 | print_line(templ % ( |
| michael@0 | 124 | "pkts-recv", |
| michael@0 | 125 | stats_after.packets_recv, |
| michael@0 | 126 | stats_after.packets_recv - stats_before.packets_recv, |
| michael@0 | 127 | )) |
| michael@0 | 128 | print_line("") |
| michael@0 | 129 | win.refresh() |
| michael@0 | 130 | lineno = 0 |
| michael@0 | 131 | |
| michael@0 | 132 | |
| michael@0 | 133 | def main(): |
| michael@0 | 134 | try: |
| michael@0 | 135 | interval = 0 |
| michael@0 | 136 | while 1: |
| michael@0 | 137 | args = poll(interval) |
| michael@0 | 138 | refresh_window(*args) |
| michael@0 | 139 | interval = 1 |
| michael@0 | 140 | except (KeyboardInterrupt, SystemExit): |
| michael@0 | 141 | pass |
| michael@0 | 142 | |
| michael@0 | 143 | if __name__ == '__main__': |
| michael@0 | 144 | main() |
