windows server 2016 and 2019 poor bandwidth using iperf3

#windows server 2016 and 2019 poor bandwidth using iperf3| 来源: 网络整理| 查看: 265

Hi I am having poor bandwidth issues when running iperf3 test on multiple windows server 2016 and 2022 servers. The issue is happening on several vms in vmware (vmware tools and hardware are up to date) also the adapter type is VMXNET3. This is also occurring with a physical windows 2016 server all nics show that they are connected at 10Gbps. On a ubuntu 20.04 vm the results are perfect. All servers are on the same subnet. AV has been disabled on one of the servers and results are still poor. Here are the results from one of the windows servers: iperf-3.1.3-win64>iperf3.exe -c

[ ID] Interval Transfer Bandwidth [ 4] 0.00-1.00 sec 858 MBytes 7.19 Gbits/sec [ 4] 1.00-2.00 sec 676 MBytes 5.67 Gbits/sec [ 4] 2.00-3.00 sec 784 MBytes 6.57 Gbits/sec [ 4] 3.00-4.00 sec 816 MBytes 6.84 Gbits/sec [ 4] 4.00-5.00 sec 800 MBytes 6.71 Gbits/sec [ 4] 5.00-6.00 sec 807 MBytes 6.77 Gbits/sec [ 4] 6.00-7.00 sec 817 MBytes 6.85 Gbits/sec [ 4] 7.00-8.00 sec 797 MBytes 6.69 Gbits/sec [ 4] 8.00-9.00 sec 704 MBytes 5.91 Gbits/sec [ 4] 9.00-10.00 sec 804 MBytes 6.74 Gbits/sec

[ ID] Interval Transfer Bandwidth [ 4] 0.00-10.00 sec 7.68 GBytes 6.60 Gbits/sec sender [ 4] 0.00-10.00 sec 7.68 GBytes 6.60 Gbits/sec receiver iperf Done. iperf3.exe -c -R

Reverse mode, remote host is sending

[ ID] Interval Transfer Bandwidth [ 4] 0.00-1.00 sec 227 MBytes 1.90 Gbits/sec [ 4] 1.00-2.00 sec 226 MBytes 1.90 Gbits/sec [ 4] 2.00-3.00 sec 237 MBytes 1.99 Gbits/sec [ 4] 3.00-4.00 sec 265 MBytes 2.22 Gbits/sec [ 4] 4.00-5.00 sec 261 MBytes 2.19 Gbits/sec [ 4] 5.00-6.00 sec 259 MBytes 2.17 Gbits/sec [ 4] 6.00-7.00 sec 260 MBytes 2.18 Gbits/sec [ 4] 7.00-8.00 sec 262 MBytes 2.20 Gbits/sec [ 4] 8.00-9.00 sec 260 MBytes 2.18 Gbits/sec [ 4] 9.00-10.00 sec 261 MBytes 2.19 Gbits/sec

[ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 2.46 GBytes 2.11 Gbits/sec 0 sender [ 4] 0.00-10.00 sec 2.46 GBytes 2.11 Gbits/sec receiver

//////////////////////////// These are the results from a ubuntu vm iperf3 -c

[ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 1.09 GBytes 9.39 Gbits/sec 0 1.89 MBytes [ 5] 1.00-2.00 sec 1.09 GBytes 9.38 Gbits/sec 0 2.04 MBytes [ 5] 2.00-3.00 sec 1.09 GBytes 9.38 Gbits/sec 0 2.15 MBytes [ 5] 3.00-4.00 sec 1.09 GBytes 9.38 Gbits/sec 0 2.15 MBytes [ 5] 4.00-5.00 sec 1.09 GBytes 9.39 Gbits/sec 0 2.15 MBytes [ 5] 5.00-6.00 sec 1.09 GBytes 9.38 Gbits/sec 0 2.15 MBytes [ 5] 6.00-7.00 sec 1.09 GBytes 9.38 Gbits/sec 0 2.15 MBytes [ 5] 7.00-8.00 sec 1.09 GBytes 9.36 Gbits/sec 0 2.15 MBytes [ 5] 8.00-9.00 sec 1.09 GBytes 9.36 Gbits/sec 0 2.25 MBytes [ 5] 9.00-10.00 sec 1.09 GBytes 9.38 Gbits/sec 0 2.25 MBytes

[ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 10.9 GBytes 9.38 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 10.9 GBytes 9.38 Gbits/sec receiver iperf Done.

iperf3 -c -R

Reverse mode, remote host is sending

[ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 1.06 GBytes 9.12 Gbits/sec [ 5] 1.00-2.00 sec 1.09 GBytes 9.39 Gbits/sec [ 5] 2.00-3.00 sec 1.09 GBytes 9.39 Gbits/sec [ 5] 3.00-4.00 sec 1.09 GBytes 9.39 Gbits/sec [ 5] 4.00-5.00 sec 1.09 GBytes 9.39 Gbits/sec [ 5] 5.00-6.00 sec 1.09 GBytes 9.39 Gbits/sec [ 5] 6.00-7.00 sec 1.09 GBytes 9.39 Gbits/sec [ 5] 7.00-8.00 sec 1.09 GBytes 9.39 Gbits/sec [ 5] 8.00-9.00 sec 1.09 GBytes 9.39 Gbits/sec [ 5] 9.00-10.00 sec 1.09 GBytes 9.39 Gbits/sec

[ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 10.9 GBytes 9.37 Gbits/sec 2 sender [ 5] 0.00-10.00 sec 10.9 GBytes 9.36 Gbits/sec receiver

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