iperfの結果をWiresharkで確認
iperfで表示される帯域値が、Wiresharkでどのように確認できるかを検証。
環境
2台の端末を用意し、ClientとServerとをiperf3で通信させる。Server側コマンドは、TCPおよびUDPで共通で、下記となる。
$ iperf3 -s
検証
TCP
iperfコマンドによる実行結果
C:\iperf-3.1.3-win64>iperf3 -c 192.168.10.201 --get-server-output
Connecting to host 192.168.10.201, port 5201
[ 4] local 192.168.10.104 port 4071 connected to 192.168.10.201 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 9.12 MBytes 76.2 Mbits/sec
[ 4] 1.00-2.00 sec 8.50 MBytes 71.4 Mbits/sec
[ 4] 2.00-3.00 sec 8.75 MBytes 73.5 Mbits/sec
[ 4] 3.00-4.00 sec 8.62 MBytes 72.3 Mbits/sec
[ 4] 4.00-5.00 sec 8.25 MBytes 69.3 Mbits/sec
[ 4] 5.00-6.01 sec 8.88 MBytes 74.2 Mbits/sec
[ 4] 6.01-7.00 sec 8.12 MBytes 68.3 Mbits/sec
[ 4] 7.00-8.00 sec 9.25 MBytes 77.6 Mbits/sec
[ 4] 8.00-9.00 sec 9.50 MBytes 80.0 Mbits/sec
[ 4] 9.00-10.00 sec 9.00 MBytes 75.2 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 88.0 MBytes 73.8 Mbits/sec sender
[ 4] 0.00-10.00 sec 88.0 MBytes 73.8 Mbits/sec receiver
Server output:
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.10.104, port 4070
[ 5] local 192.168.10.201 port 5201 connected to 192.168.10.104 port 4071
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 8.46 MBytes 70.9 Mbits/sec
[ 5] 1.00-2.00 sec 8.85 MBytes 74.3 Mbits/sec
[ 5] 2.00-3.00 sec 8.53 MBytes 71.6 Mbits/sec
[ 5] 3.00-4.00 sec 8.75 MBytes 73.4 Mbits/sec
[ 5] 4.00-5.00 sec 8.12 MBytes 68.1 Mbits/sec
[ 5] 5.00-6.00 sec 8.79 MBytes 73.7 Mbits/sec
[ 5] 6.00-7.00 sec 8.24 MBytes 69.2 Mbits/sec
[ 5] 7.00-8.00 sec 9.22 MBytes 77.4 Mbits/sec
[ 5] 8.00-9.00 sec 9.55 MBytes 80.1 Mbits/sec
[ 5] 9.00-10.00 sec 8.97 MBytes 75.3 Mbits/sec
[ 5] 10.00-10.05 sec 512 KBytes 79.9 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.05 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.05 sec 88.0 MBytes 73.4 Mbits/sec receiver
iperf Done.
73MB/s程度の結果となっている。
Wiresharkの結果
メニュー「統計」→「対話」の結果は下記となる。
メニュー「統計」→「入出力グラフ」の結果は下記となる。
およそ76MB/sとなっており、コマンド実行結果とほぼ同じである。
UDP
帯域50MB/s指定
iperfコマンドによる実行結果
C:\iperf-3.1.3-win64>iperf3 -c 192.168.10.201 -u -b 50M -l 1K --get-server-output
Connecting to host 192.168.10.201, port 5201
[ 4] local 192.168.10.104 port 52922 connected to 192.168.10.201 port 5201
[ ID] Interval Transfer Bandwidth Total Datagrams
[ 4] 0.00-1.00 sec 5.67 MBytes 47.6 Mbits/sec 5810
[ 4] 1.00-2.01 sec 6.12 MBytes 50.9 Mbits/sec 6270
[ 4] 2.01-3.00 sec 6.06 MBytes 51.2 Mbits/sec 6203
[ 4] 3.00-4.01 sec 5.80 MBytes 48.2 Mbits/sec 5936
[ 4] 4.01-5.01 sec 5.92 MBytes 49.7 Mbits/sec 6066
[ 4] 5.01-6.00 sec 6.09 MBytes 51.4 Mbits/sec 6235
[ 4] 6.00-7.00 sec 5.58 MBytes 47.0 Mbits/sec 5717
[ 4] 7.00-8.01 sec 6.36 MBytes 52.9 Mbits/sec 6510
[ 4] 8.01-9.00 sec 5.60 MBytes 47.3 Mbits/sec 5737
[ 4] 9.00-10.00 sec 5.91 MBytes 49.6 Mbits/sec 6051
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 4] 0.00-10.00 sec 59.1 MBytes 49.6 Mbits/sec 0.143 ms 1/60533 (0.0017%)
[ 4] Sent 60533 datagrams
Server output:
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.10.104, port 4432
[ 5] local 192.168.10.201 port 5201 connected to 192.168.10.104 port 52922
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 5] 0.00-1.00 sec 5.11 MBytes 42.8 Mbits/sec 0.335 ms 0/5229 (0%)
[ 5] 1.00-2.00 sec 6.23 MBytes 52.2 Mbits/sec 0.144 ms 0/6379 (0%)
[ 5] 2.00-3.00 sec 5.95 MBytes 49.9 Mbits/sec 0.090 ms 0/6090 (0%)
[ 5] 3.00-4.00 sec 6.01 MBytes 50.4 Mbits/sec 0.114 ms 0/6152 (0%)
[ 5] 4.00-5.00 sec 6.03 MBytes 50.6 Mbits/sec 0.076 ms 0/6175 (0%)
[ 5] 5.00-6.00 sec 5.87 MBytes 49.3 Mbits/sec 0.089 ms 0/6010 (0%)
[ 5] 6.00-7.00 sec 5.44 MBytes 45.6 Mbits/sec 0.202 ms 1/5574 (0.018%)
[ 5] 7.00-8.00 sec 6.38 MBytes 53.6 Mbits/sec 0.210 ms 0/6534 (0%)
[ 5] 8.00-9.00 sec 5.69 MBytes 47.8 Mbits/sec 0.092 ms 0/5831 (0%)
[ 5] 9.00-10.00 sec 5.88 MBytes 49.3 Mbits/sec 0.355 ms 0/6025 (0%)
[ 5] 10.00-10.07 sec 534 KBytes 61.0 Mbits/sec 0.143 ms 0/534 (0%)
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 5] 0.00-10.07 sec 0.00 Bytes 0.00 bits/sec 0.143 ms 1/60533 (0.0017%)
[SUM] 0.0-10.1 sec 1 datagrams received out-of-order
iperf Done.
およそ指定どおりの値（50MB/s）となっている。
Wiresharkの結果
メニュー「統計」→「対話」の結果は下記となる。
メニュー「統計」→「入出力グラフ」の結果は下記となる。
およそ51MB/sとなっており、コマンド実行（指定）結果とほぼ同じである。
帯域100MB/s指定
iperfコマンドによる実行結果
C:\iperf-3.1.3-win64>iperf3 -c 192.168.10.201 -u -b 100M -l 1K --get-server-output
Connecting to host 192.168.10.201, port 5201
[ 4] local 192.168.10.104 port 59237 connected to 192.168.10.201 port 5201
[ ID] Interval Transfer Bandwidth Total Datagrams
[ 4] 0.00-1.00 sec 2.16 MBytes 18.1 Mbits/sec 2210
[ 4] 1.00-2.00 sec 10.1 MBytes 85.0 Mbits/sec 10380
[ 4] 2.00-3.00 sec 10.4 MBytes 87.6 Mbits/sec 10695
[ 4] 3.00-4.00 sec 11.6 MBytes 97.0 Mbits/sec 11844
[ 4] 4.00-5.00 sec 12.6 MBytes 105 Mbits/sec 12861
[ 4] 5.00-6.00 sec 12.1 MBytes 101 Mbits/sec 12355
[ 4] 6.00-7.00 sec 12.5 MBytes 104 Mbits/sec 12751
[ 4] 7.00-8.00 sec 11.3 MBytes 95.0 Mbits/sec 11602
[ 4] 8.00-9.00 sec 12.0 MBytes 100 Mbits/sec 12246
[ 4] 9.00-10.00 sec 12.2 MBytes 103 Mbits/sec 12540
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 4] 0.00-10.00 sec 107 MBytes 89.7 Mbits/sec 0.092 ms 445/109482 (0.41%)
[ 4] Sent 109482 datagrams
Server output:
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.10.104, port 1025
[ 5] local 192.168.10.201 port 5201 connected to 192.168.10.104 port 59237
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 5] 0.00-1.00 sec 2.04 MBytes 17.1 Mbits/sec 0.506 ms 1/2091 (0.048%)
[ 5] 1.00-2.00 sec 9.22 MBytes 77.3 Mbits/sec 0.129 ms 444/9885 (4.5%)
[ 5] 2.00-3.00 sec 10.3 MBytes 86.7 Mbits/sec 0.072 ms 0/10579 (0%)
[ 5] 3.00-4.00 sec 11.7 MBytes 98.0 Mbits/sec 0.103 ms 0/11959 (0%)
[ 5] 4.00-5.00 sec 12.6 MBytes 105 Mbits/sec 0.152 ms 0/12868 (0%)
[ 5] 5.00-6.00 sec 12.0 MBytes 100 Mbits/sec 0.061 ms 0/12264 (0%)
[ 5] 6.00-7.00 sec 12.4 MBytes 104 Mbits/sec 0.127 ms 0/12741 (0%)
[ 5] 7.00-8.00 sec 11.4 MBytes 95.7 Mbits/sec 0.115 ms 0/11683 (0%)
[ 5] 8.00-9.00 sec 11.9 MBytes 99.5 Mbits/sec 0.082 ms 0/12159 (0%)
[ 5] 9.00-10.00 sec 12.3 MBytes 103 Mbits/sec 0.091 ms 0/12581 (0%)
[ 5] 10.00-10.06 sec 672 KBytes 94.2 Mbits/sec 0.092 ms 0/672 (0%)
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 5] 0.00-10.06 sec 0.00 Bytes 0.00 bits/sec 0.092 ms 445/109482 (0.41%)
[SUM] 0.0-10.1 sec 1 datagrams received out-of-order
iperf Done.
およそ指定どおりの値（100MB/s）となっている。
Wiresharkの結果
メニュー「統計」→「対話」の結果は下記となる。
メニュー「統計」→「入出力グラフ」の結果は下記となる。
およそ92MB/sとなっており、コマンド実行（指定）結果とほぼ同じである。
終わりに
条件によるかもしれないが、iperfの結果とWiresharkとの照合ができたと考えたい。