Check Network Bandwidth
2016/09/08 |
Check Network Bandwidth with iperf.
This needs 2 machine, Client(Sender) and Server(Receiver). |
|
[1] | Install iperf3 (Install on both Client and Server) . |
root@dlp:~# apt-get -y install iperf3
|
[2] | Execute the command on the Server like follows. It's possible to specify the listening port to add "-p (port number)". If not specified. default port(5201) is used like follows. |
root@dlp:~# iperf3 -s ----------------------------------------------------------- Server listening on 5201 ----------------------------------------------------------- |
[3] | Check Network Bandwidth to execute the command like follows. |
# iperf3 -c (server's hostname or IP address) root@www:~# iperf3 -c 10.0.0.30 Connecting to host 10.0.0.30, port 5201 [ 4] local 10.0.0.31 port 49300 connected to 10.0.0.30 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 2.90 GBytes 24.9 Gbits/sec 3 3.02 MBytes [ 4] 1.00-2.00 sec 3.47 GBytes 29.8 Gbits/sec 0 3.02 MBytes [ 4] 2.00-3.00 sec 3.39 GBytes 29.2 Gbits/sec 1 3.02 MBytes [ 4] 3.00-4.00 sec 3.44 GBytes 29.5 Gbits/sec 0 3.02 MBytes [ 4] 4.00-5.00 sec 3.46 GBytes 29.7 Gbits/sec 3 3.02 MBytes [ 4] 5.00-6.00 sec 3.44 GBytes 29.6 Gbits/sec 26 2.20 MBytes [ 4] 6.00-7.00 sec 3.47 GBytes 29.8 Gbits/sec 0 3.01 MBytes [ 4] 7.00-8.00 sec 3.47 GBytes 29.8 Gbits/sec 0 3.01 MBytes [ 4] 8.00-9.00 sec 3.36 GBytes 28.8 Gbits/sec 0 3.01 MBytes [ 4] 9.00-10.00 sec 2.11 GBytes 18.1 Gbits/sec 0 3.01 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 32.5 GBytes 27.9 Gbits/sec 33 sender [ 4] 0.00-10.00 sec 32.5 GBytes 27.9 Gbits/sec receiver iperf Done. |
[4] | There are many options like below. Try to do. |
root@dlp:~# iperf3 --help Usage: iperf [-s|-c host] [options] iperf [-h|--help] [-v|--version] Server or Client: -p, --port # server port to listen on/connect to -f, --format [kmgKMG] format to report: Kbits, Mbits, KBytes, MBytes -i, --interval # seconds between periodic bandwidth reports -F, --file name xmit/recv the specified file -A, --affinity n/n,m set CPU affinity -B, --bind <host> bind to a specific interface -V, --verbose more detailed output -J, --json output in JSON format -d, --debug emit debugging output -v, --version show version information and quit -h, --help show this message and quit Server specific: -s, --server run in server mode -D, --daemon run the server as a daemon -1, --one-off handle one client connection then exit Client specific: -c, --client <host> run in client mode, connecting to <host> -u, --udp use UDP rather than TCP -b, --bandwidth #[KMG][/#] target bandwidth in bits/sec (0 for unlimited) (default 1 Mbit/sec for UDP, unlimited for TCP) (optional slash and packet count for burst mode) -t, --time # time in seconds to transmit for (default 10 secs) -n, --bytes #[KMG] number of bytes to transmit (instead of -t) -k, --blockcount #[KMG] number of blocks (packets) to transmit (instead of -t or -n) -l, --len #[KMG] length of buffer to read or write (default 128 KB for TCP, 8 KB for UDP) -P, --parallel # number of parallel client streams to run -R, --reverse run in reverse mode (server sends, client receives) -w, --window #[KMG] set window size / socket buffer size -C, --linux-congestion <algo> set TCP congestion control algorithm (Linux only) -M, --set-mss # set TCP maximum segment size (MTU - 40 bytes) -N, --nodelay set TCP no delay, disabling Nagle's Algorithm -4, --version4 only use IPv4 -6, --version6 only use IPv6 -S, --tos N set the IP 'type of service' -L, --flowlabel N set the IPv6 flow label (only supported on Linux) -Z, --zerocopy use a 'zero copy' method of sending data -O, --omit N omit the first n seconds -T, --title str prefix every output line with this string --get-server-output get results from server [KMG] indicates options that support a K/M/G suffix for kilo-, mega-, or giga- iperf3 homepage at: http://software.es.net/iperf/ Report bugs to: https://github.com/esnet/iperf |