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iperf3でスループット測定

Last updated at Posted at 2021-08-05

GbEスイッチに接続した端末のスループット

iperf3で同じスイッチに接続している同じネットワークにいる端末間のスループットを測定します。
使い方やインストール方法は数多くのサイト、ページがあるので割愛します。

サーバ側(Windows10 192.168.2.3)

C:\Program Files (x86)\iperf-3.1.3>iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.2.6, port 49226
[  5] local 192.168.2.3 port 5201 connected to 192.168.2.6 port 49228
[ ID] Interval           Transfer     Bandwidth
[  5]   0.00-1.00   sec   113 MBytes   946 Mbits/sec
[  5]   1.00-2.00   sec   113 MBytes   949 Mbits/sec
[  5]   2.00-3.00   sec   113 MBytes   949 Mbits/sec
[  5]   3.00-4.00   sec   113 MBytes   949 Mbits/sec
[  5]   4.00-5.00   sec   113 MBytes   949 Mbits/sec
[  5]   5.00-6.00   sec   113 MBytes   949 Mbits/sec
[  5]   6.00-7.00   sec   113 MBytes   949 Mbits/sec
[  5]   7.00-8.00   sec   113 MBytes   949 Mbits/sec
[  5]   8.00-9.00   sec   113 MBytes   949 Mbits/sec
[  5]   9.00-10.00  sec   113 MBytes   949 Mbits/sec
[  5]  10.00-10.00  sec   346 KBytes   939 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  5]   0.00-10.00  sec  0.00 Bytes  0.00 bits/sec                  sender
[  5]   0.00-10.00  sec  1.11 GBytes   949 Mbits/sec                  receiver

クライアント側(Ubuntu 20.04LTS 192.168.2.6)

mgr206@Alpha8086:~$ iperf3 -c 192.168.2.3
Connecting to host 192.168.2.3, port 5201
[  5] local 192.168.2.6 port 49228 connected to 192.168.2.3 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   114 MBytes   958 Mbits/sec    0    210 KBytes
[  5]   1.00-2.00   sec   113 MBytes   949 Mbits/sec    0    210 KBytes
[  5]   2.00-3.00   sec   113 MBytes   949 Mbits/sec    0    210 KBytes
[  5]   3.00-4.00   sec   113 MBytes   949 Mbits/sec    0    210 KBytes
[  5]   4.00-5.00   sec   113 MBytes   949 Mbits/sec    0    210 KBytes
[  5]   5.00-6.00   sec   113 MBytes   949 Mbits/sec    0    210 KBytes
[  5]   6.00-7.00   sec   113 MBytes   949 Mbits/sec    0    210 KBytes
[  5]   7.00-8.00   sec   113 MBytes   949 Mbits/sec    0    210 KBytes
[  5]   8.00-9.00   sec   113 MBytes   949 Mbits/sec    0    210 KBytes
[  5]   9.00-10.00  sec   113 MBytes   950 Mbits/sec    0    210 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.11 GBytes   950 Mbits/sec    0             sender
[  5]   0.00-10.00  sec  1.11 GBytes   949 Mbits/sec                  receiver

iperf Done.

結果

約950Mbpsでした。
iperf3の測定か大きいファイルの転送をしない限り1Gbpsの帯域を使うこと無いのでは、と思いました。

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