iperf3 网络测试工具¶

服务端：

$ iperf3 -s

客户端：

$ iperf3 -c <server_addr>

常用参数：

-R 默认行为是C向S发数据，客户端使用-R可以使发送数据的方向反转
--length 指定单个packet的大小
-t 持续时间
-P 客户端并行stream数
-M MTU
-p 指定服务器端口

服务端输出例：

[r@r-lc sk]$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from ::1, port 45438
[  5] local ::1 port 5201 connected to ::1 port 45440
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  4.94 GBytes  42.4 Gbits/sec               
[  5]   1.00-2.00   sec  4.67 GBytes  40.1 Gbits/sec               
[  5]   2.00-3.00   sec  4.67 GBytes  40.1 Gbits/sec               
[  5]   3.00-4.00   sec  4.92 GBytes  42.3 Gbits/sec               
[  5]   4.00-5.00   sec  4.85 GBytes  41.7 Gbits/sec               
[  5]   5.00-6.00   sec  4.98 GBytes  42.8 Gbits/sec               
[  5]   6.00-7.00   sec  4.94 GBytes  42.5 Gbits/sec               
[  5]   7.00-8.00   sec  4.66 GBytes  40.0 Gbits/sec               
[  5]   8.00-9.00   sec  4.85 GBytes  41.6 Gbits/sec               
[  5]   9.00-10.00  sec  4.20 GBytes  36.1 Gbits/sec               
[  5]  10.00-10.00  sec  1.00 MBytes  41.3 Gbits/sec               
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.00  sec  47.7 GBytes  41.0 Gbits/sec                  receiver

客户端输出例：

[r@r-lc wiki]$ iperf3 -c localhost
Connecting to host localhost, port 5201
[  5] local ::1 port 45440 connected to ::1 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  4.94 GBytes  42.4 Gbits/sec    0   1.25 MBytes
[  5]   1.00-2.00   sec  4.67 GBytes  40.1 Gbits/sec    0   1.25 MBytes
[  5]   2.00-3.00   sec  4.67 GBytes  40.1 Gbits/sec    0   1.25 MBytes
[  5]   3.00-4.00   sec  4.92 GBytes  42.3 Gbits/sec    0   1.37 MBytes
[  5]   4.00-5.00   sec  4.85 GBytes  41.7 Gbits/sec    0   1.37 MBytes
[  5]   5.00-6.00   sec  4.98 GBytes  42.8 Gbits/sec    0   1.37 MBytes
[  5]   6.00-7.00   sec  4.94 GBytes  42.5 Gbits/sec    0   1.37 MBytes
[  5]   7.00-8.00   sec  4.66 GBytes  40.0 Gbits/sec    0   1.37 MBytes
[  5]   8.00-9.00   sec  4.85 GBytes  41.6 Gbits/sec    0   1.37 MBytes
[  5]   9.00-10.00  sec  4.20 GBytes  36.1 Gbits/sec    0   1.37 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  47.7 GBytes  41.0 Gbits/sec    0             sender
[  5]   0.00-10.00  sec  47.7 GBytes  41.0 Gbits/sec                  receiver

iperf Done.

iperf3不像iperf2一样，支持多个客户端连接，但可以开两个进程，双向打流例子：

# server:
iperf3 -s -p 1000 &
iperf3 -s -p 1001 &
# client1：
iperf3 -c 192.168.99.111 --set-mss 100 -t 1000 -p 1000
# client2：
iperf3 -c 192.168.99.111 --set-mss 100 -t 1000 -p 1001 -R