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vnStat is a network traffic monitor for Linux that keeps a log of daily network
traffic for the selected interface(s). vnStat isn't a packet sniffer. The
traffic information is analyzed from the /proc filesystem. That way vnStat can be
used even without root permissions. However, at least a 2.2 series kernel is required.
This program is open source/GPL'ed and can be installed either as root or as a single user.
Better instructions are included in the README. Feel free to send comments
by email (remove the spamfilter)
or try contacting me from irc (Vergo @ IRCNet). The forum
is also once again available. Announcements about new versions
can be obtained by subscribing to the vnStat project at
freshmeat.net.
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Some years ago (in 2002) I felt that I needed some kind of network traffic monitor to
see how much traffic my server/router actually generated. I had been
using mrtg
for a while but the problem with it was that it didn't tell how many
megabytes the daily traffic was.
Next I tested ntop, but it had far too many features
compared to my needs. Then I found darkstat
that was much smaller and stabler, but after using it for about a week,
I came to a conclusion that a packet sniffer wasn't what I needed since it
generates too much cpu load with high network traffic and requires the process
running with root permissions. Since I needed something really simple but stable,
I decided to write it by myself.
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- vnstat-1.6_bsd.tar.gz - source (36.0 kB)
- Contains support for *BSD and Darwin/MacOS X
- See INSTALL_BSD for instructions
- OpenBSD support has been reported to be broken
External vnStat reladed links:
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Since vnStat doesn't have/need a fancy GUI, all 'screenshots' are console
captures.
vnStat 1.6 by Teemu Toivola
-q, --query query database
-h, --hours show hours
-d, --days show days
-m, --months show months
-w, --weeks show weeks
-t, --top10 show top10
-s, --short use short output
-u, --update update database
-i, --iface change interface (default: eth0)
-?, --help short help
-v, --version show version
-tr, --traffic calculate traffic
-l, --live show transfer rate in real time
See also "--longhelp" for complete options list and "man vnstat".
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$ vnstat
Database updated: Sun Dec 2 22:20:01 2007
inet (eth0)
received: 735.00 GB (48.9%)
transmitted: 769.38 GB (51.1%)
total: 1.47 TB
rx | tx | total
-----------------------+------------+-----------
yesterday 23.35 MB | 20.25 MB | 43.60 MB
today 27.47 MB | 21.37 MB | 48.84 MB
-----------------------+------------+-----------
estimated 29 MB | 22 MB | 51 MB
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(with 2 interfaces)
$ vnstat
rx / tx / total / estimated
Internet (eth1):
yesterday 209.36 MB / 322.88 MB / 532.24 MB
today 1.99 GB / 2.46 GB / 4.46 GB / 4.67 GB
Local (eth0):
yesterday 248.27 MB / 4.63 GB / 4.87 GB
today 2.31 GB / 4.21 GB / 6.52 GB / 6.83 GB
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$ vnstat -h
inet (eth0) 22:15
^ r
| rt r
| rt rt
| rt rt
| r rt rt
| rt r rt rt
| rt rt rt rt rt
| rt rt rt r r rt r rt r rt rt rt
| rt rt rt r rt rt rt rt rt rt rt rt rt
| rt rt rt rt r r r r r rt rt rt rt rt rt rt rt rt rt
-+--------------------------------------------------------------------------->
| 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22
h rx (kB) tx (kB) h rx (kB) tx (kB) h rx (kB) tx (kB)
23 1,352 1,219 07 277 151 15 1,352 1,165
00 2,281 2,140 08 402 158 16 1,487 878
01 1,485 1,261 09 290 155 17 1,752 1,559
02 648 522 10 589 185 18 1,455 1,001
03 392 261 11 650 202 19 2,332 1,835
04 323 240 12 907 350 20 3,881 3,619
05 311 179 13 1,234 1,044 21 3,695 3,237
06 281 173 14 1,221 812 22 675 591
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$ vnstat -d
inet (eth0) / daily
day rx | tx | total
------------------------+-------------+----------------------------------------
03.11. 26.57 MB | 27.39 MB | 53.97 MB %%%%%%:::::::
04.11. 22.23 MB | 16.71 MB | 38.94 MB %%%%%::::
05.11. 31.38 MB | 23.35 MB | 54.74 MB %%%%%%%::::::
06.11. 35.17 MB | 26.85 MB | 62.02 MB %%%%%%%%%::::::
07.11. 42.65 MB | 34.19 MB | 76.84 MB %%%%%%%%%%%::::::::
08.11. 36.65 MB | 26.75 MB | 63.40 MB %%%%%%%%%::::::
09.11. 35.01 MB | 27.45 MB | 62.47 MB %%%%%%%%:::::::
10.11. 24.48 MB | 22.72 MB | 47.20 MB %%%%%%:::::
11.11. 26.04 MB | 19.91 MB | 45.95 MB %%%%%%:::::
12.11. 27.89 MB | 18.73 MB | 46.61 MB %%%%%%%::::
13.11. 33.82 MB | 24.52 MB | 58.35 MB %%%%%%%%::::::
14.11. 39.11 MB | 31.76 MB | 70.86 MB %%%%%%%%%::::::::
15.11. 41.57 MB | 36.23 MB | 77.80 MB %%%%%%%%%%:::::::::
16.11. 36.93 MB | 33.51 MB | 70.44 MB %%%%%%%%%::::::::
17.11. 25.79 MB | 23.87 MB | 49.66 MB %%%%%%::::::
18.11. 29.51 MB | 22.50 MB | 52.01 MB %%%%%%%::::::
19.11. 43.46 MB | 32.91 MB | 76.38 MB %%%%%%%%%%%::::::::
20.11. 51.90 MB | 47.82 MB | 99.72 MB %%%%%%%%%%%%%::::::::::::
21.11. 38.77 MB | 34.21 MB | 72.98 MB %%%%%%%%%%::::::::
22.11. 34.54 MB | 31.22 MB | 65.76 MB %%%%%%%%::::::::
23.11. 22.61 MB | 21.16 MB | 43.76 MB %%%%%:::::
24.11. 22.49 MB | 20.84 MB | 43.34 MB %%%%%:::::
25.11. 31.60 MB | 26.50 MB | 58.10 MB %%%%%%%%::::::
26.11. 38.23 MB | 33.84 MB | 72.07 MB %%%%%%%%%%::::::::
27.11. 43.54 MB | 41.88 MB | 85.42 MB %%%%%%%%%%%::::::::::
28.11. 38.86 MB | 30.87 MB | 69.73 MB %%%%%%%%%::::::::
29.11. 40.16 MB | 33.64 MB | 73.79 MB %%%%%%%%%%::::::::
30.11. 32.73 MB | 28.67 MB | 61.40 MB %%%%%%%%:::::::
01.12. 23.35 MB | 20.25 MB | 43.60 MB %%%%%:::::
02.12. 27.27 MB | 21.21 MB | 48.47 MB %%%%%%%:::::
------------------------+-------------+----------------------------------------
estimated 29 MB | 22 MB | 51 MB
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$ vnstat -m
inet (eth0) / monthly
month rx | tx | total
-------------------------+--------------+--------------------------------------
Jan '07 1.33 GB | 1.25 GB | 2.58 GB %%%%%%%%%::::::::
Feb '07 1.31 GB | 1.51 GB | 2.82 GB %%%%%%%%%::::::::::
Mar '07 1.54 GB | 1.66 GB | 3.20 GB %%%%%%%%%%%:::::::::::
Apr '07 1.27 GB | 1.13 GB | 2.40 GB %%%%%%%%::::::::
May '07 1.17 GB | 1.31 GB | 2.48 GB %%%%%%%%:::::::::
Jun '07 920.61 MB | 2.00 GB | 2.90 GB %%%%%%:::::::::::::
Jul '07 917.21 MB | 763.12 MB | 1.64 GB %%%%%%:::::
Aug '07 915.59 MB | 905.99 MB | 1.78 GB %%%%%%::::::
Sep '07 926.10 MB | 678.70 MB | 1.57 GB %%%%%%::::
Oct '07 1.00 GB | 714.00 MB | 1.69 GB %%%%%%:::::
Nov '07 0.99 GB | 842.16 MB | 1.81 GB %%%%%%%:::::
Dec '07 50.62 MB | 41.46 MB | 92.07 MB
-------------------------+--------------+--------------------------------------
estimated 808 MB | 663 MB | 1.44 GB
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$ vnstat -t
inet (eth0) / top 10
# day rx | tx | total
-------------------------------+-------------+---------------------------------
1 26.03.06 6.41 GB | 10.83 GB | 17.24 GB %%%%%%%:::::::::::
2 05.02.04 8.31 GB | 7.08 GB | 15.39 GB %%%%%%%%%:::::::
3 04.02.05 7.96 GB | 6.21 GB | 14.17 GB %%%%%%%%::::::
4 04.09.05 8.09 GB | 5.22 GB | 13.30 GB %%%%%%%%:::::
5 04.11.03 4.52 GB | 5.96 GB | 10.47 GB %%%%::::::
6 26.06.05 4.12 GB | 6.10 GB | 10.22 GB %%%%::::::
7 02.11.03 7.18 GB | 2.79 GB | 9.97 GB %%%%%%%:::
8 31.01.05 3.68 GB | 5.99 GB | 9.66 GB %%%%::::::
9 28.08.03 5.93 GB | 3.69 GB | 9.62 GB %%%%%%::::
10 23.12.03 4.36 GB | 5.23 GB | 9.59 GB %%%%%:::::
-------------------------------+-------------+---------------------------------
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$ vnstat -w
Local (eth0) / weekly
rx | tx | total
----------------------------+---------------+--------------
last 7 days 4.83 GB | 18.82 GB | 23.65 GB
last week 2.52 GB | 14.58 GB | 17.10 GB
current week 2.31 GB | 4.24 GB | 6.55 GB
----------------------------+---------------+--------------
estimated 17.66 GB | 32.36 GB | 50.02 GB
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$ vnstat -tr
10386 packets sampled in 5 seconds
Traffic average for eth1
rx 112.21 kB/s 620 packets/s
tx 1444.77 kB/s 1456 packets/s
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$ vnstat -l
Monitoring eth0... (press CTRL-C to stop)
rx: 430.68 kB/s 291 p/s tx: 10.21 kB/s 147 p/s
eth0 / traffic statistics
rx | tx
--------------------------------------+----------------------------------------
bytes 32.79 MB | 957 kB
--------------------------------------+----------------------------------------
max 656.39 kB/s | 90.50 kB/s
average 419.78 kB/s | 11.97 kB/s
min 288.37 kB/s | 7.03 kB/s
--------------------------------------+----------------------------------------
packets 23298 | 12348
--------------------------------------+----------------------------------------
max 732 p/s | 609 p/s
average 291 p/s | 154 p/s
min 195 p/s | 100 p/s
--------------------------------------+----------------------------------------
time 1.33 minutes
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