iperf3
iperf is a tool for active measurements of the maximum achievable bandwidth on IP networks. It supports tuning of various parameters related to timing, protocols, and buffers. For each test it reports the measured throughput / bitrate, loss, and other parameters.
Usage
# server
$ iperf3 -s -p 1020
# client
iperf3 -c 127.0.0.1 -p 1020
Connecting to host 127.0.0.1, port 1020
[ 5] local 127.0.0.1 port 51841 connected to 127.0.0.1 port 1020
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 5.51 GBytes 47.3 Gbits/sec
[ 5] 1.00-2.00 sec 5.57 GBytes 47.8 Gbits/sec
[ 5] 2.00-3.00 sec 5.44 GBytes 46.7 Gbits/sec
[ 5] 3.00-4.00 sec 6.23 GBytes 53.5 Gbits/sec
[ 5] 4.00-5.00 sec 6.17 GBytes 53.0 Gbits/sec
[ 5] 5.00-6.00 sec 6.11 GBytes 52.5 Gbits/sec
[ 5] 6.00-7.00 sec 6.23 GBytes 53.5 Gbits/sec
[ 5] 7.00-8.00 sec 6.14 GBytes 52.7 Gbits/sec
[ 5] 8.00-9.00 sec 6.17 GBytes 53.0 Gbits/sec
[ 5] 9.00-10.00 sec 6.13 GBytes 52.6 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 59.7 GBytes 51.3 Gbits/sec sender
[ 5] 0.00-10.00 sec 59.7 GBytes 51.3 Gbits/sec receiver
iperf Done.
-p [port]：指定端口-u：使用UDP-b [target bitrate]：target bitrate in bits/sec (0 for unlimited) (default 1 Mbit/sec for UDP, unlimited for TCP)-t [duration]：time in seconds to transmit for (default 10 secs)
Parameters
iperf3: parameter error - must either be a client (-c) or server (-s)
Usage: iperf3 [-s|-c host] [options]
iperf3 [-h|--help] [-v|--version]
Server or Client:
-p, --port # server port to listen on/connect to
-f, --format [kmgtKMGT] format to report: Kbits, Mbits, Gbits, Tbits
-i, --interval # seconds between periodic throughput reports
-F, --file name xmit/recv the specified file
-B, --bind <host> bind to the interface associated with the address <host>
-V, --verbose more detailed output
-J, --json output in JSON format
--logfile f send output to a log file
--forceflush force flushing output at every interval
-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
-I, --pidfile file write PID file
-1, --one-off handle one client connection then exit
--rsa-private-key-path path to the RSA private key used to decrypt
authentication credentials
--authorized-users-path path to the configuration file containing user
credentials
Client specific:
-c, --client <host> run in client mode, connecting to <host>
-u, --udp use UDP rather than TCP
--connect-timeout # timeout for control connection setup (ms)
-b, --bitrate #[KMG][/#] target bitrate in bits/sec (0 for unlimited)
(default 1 Mbit/sec for UDP, unlimited for TCP)
(optional slash and packet count for burst mode)
--pacing-timer #[KMG] set the timing for pacing, in microseconds (default 1000)
-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, --length #[KMG] length of buffer to read or write
(default 128 KB for TCP, dynamic or 1460 for UDP)
--cport <port> bind to a specific client port (TCP and UDP, default: ephemeral port)
-P, --parallel # number of parallel client streams to run
-R, --reverse run in reverse mode (server sends, client receives)
--bidir run in bidirectional mode.
Client and server send and receive data.
-w, --window #[KMG] set window size / socket buffer size
-M, --set-mss # set TCP/SCTP maximum segment size (MTU - 40 bytes)
-N, --no-delay set TCP/SCTP 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, 0-255.
The usual prefixes for octal and hex can be used,
i.e. 52, 064 and 0x34 all specify the same value.
--dscp N or --dscp val set the IP dscp value, either 0-63 or symbolic.
Numeric values can be specified in decimal,
octal and hex (see --tos above).
-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
--extra-data str data string to include in client and server JSON
--get-server-output get results from server
--udp-counters-64bit use 64-bit counters in UDP test packets
--repeating-payload use repeating pattern in payload, instead of
randomized payload (like in iperf2)
--username username for authentication
--rsa-public-key-path path to the RSA public key used to encrypt
authentication credentials
[KMG] indicates options that support a K/M/G suffix for kilo-, mega-, or giga-
各系统下安装
macOS下安装
$ brew install iperf
OpenWrt下安装
$ opkg update
$ opkg install iperf
Ubuntu下安装
$ sudo apt-get update
$ sudo apt-get install iperf3