[root@localhost ]# yum search iperf
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.huaweicloud.com
* updates: mirrors.tuna.tsinghua.edu.cn
==================================================================== N/S matched: iperf ====================================================================
iperf3-devel.i686 : Development files for iperf3
iperf3-devel.x86_64 : Development files for iperf3
iperf3.i686 : Measurement tool for TCP/UDP bandwidth performance
iperf3.x86_64 : Measurement tool for TCP/UDP bandwidth performance
名称和简介匹配 only，使用“search all”试试。
[root@localhost ]#
[root@localhost ]# yum install iperf3
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.huaweicloud.com
* updates: mirrors.tuna.tsinghua.edu.cn
正在解决依赖关系
--> 正在检查事务
---> 软件包 iperf3.x86_64.0.3.1.7-2.el7 将被 安装
--> 解决依赖关系完成
依赖关系解决
============================================================================================================================================================
Package 架构 版本 源 大小
============================================================================================================================================================
正在安装:
iperf3 x86_64 3.1.7-2.el7 base 79 k
事务概要
============================================================================================================================================================
安装 1 软件包
总下载量：79 k
安装大小：197 k
Is this ok [y/d/N]: y
Downloading packages:
iperf3-3.1.7-2.el7.x86_64.rpm | 79 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在安装 : iperf3-3.1.7-2.el7.x86_64 1/1
验证中 : iperf3-3.1.7-2.el7.x86_64 1/1
已安装:
iperf3.x86_64 0:3.1.7-2.el7
完毕！
[root@localhost ]# iperf3 -v
iperf 3.1.7
Linux localhost 3.10.0-1160.71.1.el7.x86_64 #1 SMP Tue Jun 28 15:37:28 UTC 2022 x86_64
Optional features available: CPU affinity setting, IPv6 flow label, TCP congestion algorithm setting, sendfile / zerocopy, socket pacing
[root@localhost ]#
[root@localhost ]# iperf3 -h
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
--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
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)
--fq-rate #[KMG] enable fair-queuing based socket pacing in
bits/sec (Linux only)
-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, dynamic or 1 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)
-w, --window #[KMG] set window size / socket buffer size
-C, --congestion <algo> set TCP congestion control algorithm (Linux and FreeBSD only)
-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'
-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
--udp-counters-64bit use 64-bit counters in UDP test packets
[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
[root@localhost ]#
iperf official website address:
iPerf - The TCP, UDP and SCTP network bandwidth measurement tool
iperf features:
Measurement bandwidth
Reports the MSS/MTU size and observed read size.
Support for TCP window sizes via socket buffers.
UDP
Clients can create UDP streams of specified bandwidth.
Measuring packet loss
Measuring Latency Jitter
multicast support
Cross-platform: Windows, Linux, Android, MacOS X, FreeBSD, OpenBSD, NetBSD, VxWorks, Solaris,. . .
Client and server can have multiple connections at the same time (-P option).
The server handles multiple connections instead of exiting after one test.
Can run for a specified time (-t option) instead of the amount of data to transfer (-n or -k option).
Print periodicity, median bandwidth, jitter and loss reports at specified intervals (-i option).
Run the server as a daemon (-D option)
Use a representative stream to test how link-layer compression affects achievable bandwidth (-F option).
The server accepts a single client at the same time (iPerf3) and multiple clients at the same time (iPerf2)