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Windows 11 VM Slow Network Speed


Pengy

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Just leaving notes here for a problem I faced where the network speeds in my Windows 11 VM would be much slower than from the Unraid host. Speeds would be about 300mbps on iperf3 and all over the place depending on what speed test site I used. This also affected a USB NIC I tried. I was able to achieve 15+gbps to the vm host with the default number of virtio threads after this fix. I don't know what disabled the receive window tuning though.

 

TL;DR Set Receive Window Autotuning Level to Normal running "Set-NetTCPSetting -AutoTuningLevelLocal Normal" in an elevated powershell prompt.

You can check your current settings by running

 

Reference: https://learn.microsoft.com/en-us/windows-server/networking/technologies/network-subsystem/net-sub-performance-tuning-nics

Specs:
AMD Ryzen R9 5900X

Asus ROG Strix B550-E Motherboard (Intel I225-V 2.5G NIC)

64 GB DDR4-3600

Nvidia GTX 1660 Ti
Nvidia RTX 2070

 
Network:

Onboard Intel I225-V 2.5G NIC @ 1G

Ubiquiti Dream Machine SE

AT&T Fiber 1G Symmetrical

Unraid Network Configuration:
image.thumb.png.1c60719e05252faebf2016df8c551509.png

VM XML:

Spoiler
<?xml version='1.0' encoding='UTF-8'?>
<domain type='kvm' id='3'>
  <name>Windows 11</name>
  <uuid>f4260f59-6071-9bfd-ab2a-def727fbe468</uuid>
  <metadata>
    <vmtemplate xmlns="unraid" name="Windows 11" icon="windows11.png" os="windowstpm"/>
  </metadata>
  <memory unit='KiB'>33554432</memory>
  <currentMemory unit='KiB'>33554432</currentMemory>
  <memoryBacking>
    <nosharepages/>
  </memoryBacking>
  <vcpu placement='static'>12</vcpu>
  <iothreads>2</iothreads>
  <cputune>
    <vcpupin vcpu='0' cpuset='6'/>
    <vcpupin vcpu='1' cpuset='18'/>
    <vcpupin vcpu='2' cpuset='7'/>
    <vcpupin vcpu='3' cpuset='19'/>
    <vcpupin vcpu='4' cpuset='8'/>
    <vcpupin vcpu='5' cpuset='20'/>
    <vcpupin vcpu='6' cpuset='9'/>
    <vcpupin vcpu='7' cpuset='21'/>
    <vcpupin vcpu='8' cpuset='10'/>
    <vcpupin vcpu='9' cpuset='22'/>
    <vcpupin vcpu='10' cpuset='11'/>
    <vcpupin vcpu='11' cpuset='23'/>
    <emulatorpin cpuset='0,12'/>
    <iothreadpin iothread='2' cpuset='1,13'/>
  </cputune>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-q35-7.1'>hvm</type>
    <loader readonly='yes' type='pflash'>/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi-tpm.fd</loader>
    <nvram>/etc/libvirt/qemu/nvram/f4260f59-6071-9bfd-ab2a-def727fbe468_VARS-pure-efi-tpm.fd</nvram>
  </os>
  <features>
    <acpi/>
    <apic/>
    <hyperv mode='custom'>
      <relaxed state='on'/>
      <vapic state='on'/>
      <spinlocks state='on' retries='8191'/>
      <vpindex state='on'/>
      <synic state='on'/>
      <stimer state='on'/>
      <reset state='on'/>
      <vendor_id state='on' value='ASUS'/>
      <frequencies state='on'/>
    </hyperv>
    <kvm>
      <hidden state='on'/>
    </kvm>
    <vmport state='off'/>
    <ioapic driver='kvm'/>
  </features>
  <cpu mode='host-passthrough' check='none' migratable='off'>
    <topology sockets='1' dies='1' cores='6' threads='2'/>
    <cache mode='passthrough'/>
    <feature policy='require' name='topoext'/>
    <feature policy='disable' name='hypervisor'/>
    <feature policy='disable' name='svm'/>
  </cpu>
  <clock offset='localtime'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
    <timer name='hypervclock' present='yes'/>
    <timer name='tsc' present='yes' mode='native'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/local/sbin/qemu</emulator>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/user/othermedia/isos/Win11_22H2_English_x64v2.iso' index='1'/>
      <backingStore/>
      <target dev='hda' bus='usb'/>
      <readonly/>
      <boot order='1'/>
      <alias name='usb-disk0'/>
      <address type='usb' bus='0' port='2'/>
    </disk>
    <controller type='pci' index='0' model='pcie-root'>
      <alias name='pcie.0'/>
    </controller>
    <controller type='pci' index='1' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='1' port='0x10'/>
      <alias name='pci.1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0' multifunction='on'/>
    </controller>
    <controller type='pci' index='2' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='2' port='0x8'/>
      <alias name='pci.2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0' multifunction='on'/>
    </controller>
    <controller type='pci' index='3' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='3' port='0x9'/>
      <alias name='pci.3'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <controller type='pci' index='4' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='4' port='0xa'/>
      <alias name='pci.4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='5' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='5' port='0xb'/>
      <alias name='pci.5'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x3'/>
    </controller>
    <controller type='pci' index='6' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='6' port='0xc'/>
      <alias name='pci.6'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x4'/>
    </controller>
    <controller type='pci' index='7' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='7' port='0xd'/>
      <alias name='pci.7'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x5'/>
    </controller>
    <controller type='pci' index='8' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='8' port='0xe'/>
      <alias name='pci.8'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x6'/>
    </controller>
    <controller type='sata' index='0'>
      <alias name='ide'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
    </controller>
    <controller type='usb' index='0' model='qemu-xhci' ports='15'>
      <alias name='usb'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <alias name='virtio-serial0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:25:50:ee'/>
      <source bridge='br0'/>
      <target dev='vnet1'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/0'/>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
      <alias name='serial0'/>
    </serial>
    <console type='pty' tty='/dev/pts/0'>
      <source path='/dev/pts/0'/>
      <target type='serial' port='0'/>
      <alias name='serial0'/>
    </console>
    <channel type='unix'>
      <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/domain-3-Windows 11/org.qemu.guest_agent.0'/>
      <target type='virtio' name='org.qemu.guest_agent.0' state='connected'/>
      <alias name='channel0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='mouse' bus='ps2'>
      <alias name='input0'/>
    </input>
    <input type='keyboard' bus='ps2'>
      <alias name='input1'/>
    </input>
    <tpm model='tpm-tis'>
      <backend type='emulator' version='2.0' persistent_state='yes'/>
      <alias name='tpm0'/>
    </tpm>
    <audio id='1' type='none'/>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x08' slot='0x00' function='0x0'/>
      </source>
      <alias name='hostdev0'/>
      <rom file='/mnt/disks/970pro512/evga_rtx2070.rom'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0' multifunction='on'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x08' slot='0x00' function='0x1'/>
      </source>
      <alias name='hostdev1'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x1'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
      </source>
      <boot order='2'/>
      <alias name='hostdev2'/>
      <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x08' slot='0x00' function='0x2'/>
      </source>
      <alias name='hostdev3'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x2'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x08' slot='0x00' function='0x3'/>
      </source>
      <alias name='hostdev4'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x3'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x0a' slot='0x00' function='0x3'/>
      </source>
      <alias name='hostdev5'/>
      <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='no'>
      <source>
        <vendor id='0x1532'/>
        <product id='0x0088'/>
        <address bus='1' device='2'/>
      </source>
      <alias name='hostdev6'/>
      <address type='usb' bus='0' port='1'/>
    </hostdev>
    <memballoon model='none'/>
  </devices>
  <seclabel type='dynamic' model='dac' relabel='yes'>
    <label>+0:+100</label>
    <imagelabel>+0:+100</imagelabel>
  </seclabel>
</domain>

 

Relevant Network block:

    <interface type='bridge'>
      <mac address='52:54:00:25:50:ee'/>
      <source bridge='br0'/>
      <target dev='vnet1'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
    </interface>

 

 

Data Points:

Before:

Speed Test Screenshots:
 

Spoiler

image.thumb.png.a14dcb902c9d6933914013706a2a60b5.png

image.png.a78f5c00fccc14e8be16de6d87163613.png


Iperf3 Runs:

10.39.0.1 - Router

10.39.0.10 - Unraid Host

Spoiler

Between VM and Router

VM to Router
PS C:\iperf3\iperf-3.1.3-win64> .\iperf3.exe -c 10.39.0.1
Connecting to host 10.39.0.1, port 5201
[  4] local 10.39.0.223 port 50191 connected to 10.39.0.1 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  37.6 MBytes   316 Mbits/sec
[  4]   1.00-2.00   sec  45.2 MBytes   379 Mbits/sec
[  4]   2.00-3.00   sec  73.0 MBytes   613 Mbits/sec
[  4]   3.00-4.00   sec  36.9 MBytes   309 Mbits/sec
[  4]   4.00-5.00   sec  45.8 MBytes   384 Mbits/sec
[  4]   5.00-6.00   sec  75.5 MBytes   633 Mbits/sec
[  4]   6.00-7.00   sec  36.6 MBytes   307 Mbits/sec
[  4]   7.00-8.00   sec  56.1 MBytes   471 Mbits/sec
[  4]   8.00-9.00   sec  55.2 MBytes   464 Mbits/sec
[  4]   9.00-10.00  sec  35.1 MBytes   294 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   497 MBytes   417 Mbits/sec                  sender
[  4]   0.00-10.00  sec   497 MBytes   417 Mbits/sec                  receiver

Router to VM
PS C:\iperf3\iperf-3.1.3-win64> .\iperf3.exe -c 10.39.0.1 -R
Connecting to host 10.39.0.1, port 5201
Reverse mode, remote host 10.39.0.1 is sending
[  4] local 10.39.0.223 port 50193 connected to 10.39.0.1 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  94.7 MBytes   794 Mbits/sec
[  4]   1.00-2.00   sec  94.6 MBytes   793 Mbits/sec
[  4]   2.00-3.00   sec  91.5 MBytes   768 Mbits/sec
[  4]   3.00-4.00   sec  93.5 MBytes   784 Mbits/sec
[  4]   4.00-5.00   sec  93.8 MBytes   787 Mbits/sec
[  4]   5.00-6.00   sec  91.6 MBytes   769 Mbits/sec
[  4]   6.00-7.00   sec  87.9 MBytes   738 Mbits/sec
[  4]   7.00-8.00   sec  82.9 MBytes   696 Mbits/sec
[  4]   8.00-9.00   sec  95.6 MBytes   802 Mbits/sec
[  4]   9.00-10.00  sec  95.9 MBytes   804 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   922 MBytes   774 Mbits/sec  226             sender
[  4]   0.00-10.00  sec   922 MBytes   773 Mbits/sec                  receiver

Between VM and Host

VM To Host
Connecting to host 10.39.0.10, port 5201
[  4] local 10.39.0.223 port 50199 connected to 10.39.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   324 MBytes  2.72 Gbits/sec
[  4]   1.00-2.00   sec   332 MBytes  2.78 Gbits/sec
[  4]   2.00-3.00   sec   239 MBytes  2.00 Gbits/sec
[  4]   3.00-4.00   sec   294 MBytes  2.47 Gbits/sec
[  4]   4.00-5.00   sec   296 MBytes  2.48 Gbits/sec
[  4]   5.00-6.00   sec   289 MBytes  2.43 Gbits/sec
[  4]   6.00-7.00   sec   296 MBytes  2.48 Gbits/sec
[  4]   7.00-8.00   sec   281 MBytes  2.36 Gbits/sec
[  4]   8.00-9.00   sec   318 MBytes  2.67 Gbits/sec
[  4]   9.00-10.00  sec   261 MBytes  2.19 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  2.86 GBytes  2.46 Gbits/sec                  sender
[  4]   0.00-10.00  sec  2.86 GBytes  2.46 Gbits/sec                  receiver

Host to VM
Connecting to host 10.39.0.10, port 5201
Reverse mode, remote host 10.39.0.10 is sending
[  4] local 10.39.0.223 port 50201 connected to 10.39.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  1.05 GBytes  9.04 Gbits/sec
[  4]   1.00-2.00   sec  1.06 GBytes  9.11 Gbits/sec
[  4]   2.00-3.00   sec  1.06 GBytes  9.09 Gbits/sec
[  4]   3.00-4.00   sec  1.06 GBytes  9.13 Gbits/sec
[  4]   4.00-5.00   sec  1.07 GBytes  9.16 Gbits/sec
[  4]   5.00-6.00   sec  1.07 GBytes  9.15 Gbits/sec
[  4]   6.00-7.00   sec  1.07 GBytes  9.19 Gbits/sec
[  4]   7.00-8.00   sec  1.06 GBytes  9.09 Gbits/sec
[  4]   8.00-9.00   sec  1.04 GBytes  8.97 Gbits/sec
[  4]   9.00-10.00  sec  1.07 GBytes  9.19 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  10.6 GBytes  9.12 Gbits/sec    1             sender
[  4]   0.00-10.00  sec  10.6 GBytes  9.11 Gbits/sec                  receiver

Between Host and Router

Host to Router
Connecting to host 10.39.0.1, port 5201
[  5] local 10.39.0.10 port 45406 connected to 10.39.0.1 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   120 MBytes  1.01 Gbits/sec    0    255 KBytes
[  5]   1.00-2.00   sec   109 MBytes   912 Mbits/sec    0    218 KBytes
[  5]   2.00-3.00   sec   109 MBytes   912 Mbits/sec    0   1.04 MBytes
[  5]   3.00-4.00   sec   110 MBytes   923 Mbits/sec    0    243 KBytes
[  5]   4.00-5.00   sec   110 MBytes   923 Mbits/sec    0    831 KBytes
[  5]   5.00-6.00   sec   106 MBytes   891 Mbits/sec    0   1.38 MBytes
[  5]   6.00-7.00   sec   110 MBytes   923 Mbits/sec    0    286 KBytes
[  5]   7.00-8.00   sec   106 MBytes   891 Mbits/sec    0   1.38 MBytes
[  5]   8.00-9.00   sec   110 MBytes   923 Mbits/sec    0    795 KBytes
[  5]   9.00-10.00  sec   106 MBytes   891 Mbits/sec    0   5.66 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.07 GBytes   919 Mbits/sec    0             sender
[  5]   0.00-10.04  sec  1.06 GBytes   906 Mbits/sec                  receiver

Router to Host
Connecting to host 10.39.0.1, port 5201
Reverse mode, remote host 10.39.0.1 is sending
[  5] local 10.39.0.10 port 45420 connected to 10.39.0.1 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec   106 MBytes   892 Mbits/sec
[  5]   1.00-2.00   sec   110 MBytes   919 Mbits/sec
[  5]   2.00-3.00   sec   109 MBytes   918 Mbits/sec
[  5]   3.00-4.00   sec   111 MBytes   928 Mbits/sec
[  5]   4.00-5.00   sec   110 MBytes   925 Mbits/sec
[  5]   5.00-6.00   sec   110 MBytes   926 Mbits/sec
[  5]   6.00-7.00   sec   110 MBytes   924 Mbits/sec
[  5]   7.00-8.00   sec   111 MBytes   930 Mbits/sec
[  5]   8.00-9.00   sec   109 MBytes   912 Mbits/sec
[  5]   9.00-10.00  sec   110 MBytes   923 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.06  sec  1.07 GBytes   916 Mbits/sec  548             sender
[  5]   0.00-10.00  sec  1.07 GBytes   920 Mbits/sec                  receiver

 

 

After:

Speed Test Screenshots:

Spoiler

image.thumb.png.454e12acfe42f5ede0536f28cc8019c5.png

image.thumb.png.56b2eb10659f6d0edfbc282191247df2.png

 

Iperf3 Runs:

Spoiler

Between VM and Router

VM to Router:
Connecting to host 10.39.0.1, port 5201
[  4] local 10.39.1.232 port 50240 connected to 10.39.0.1 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   107 MBytes   896 Mbits/sec
[  4]   1.00-2.00   sec   105 MBytes   882 Mbits/sec
[  4]   2.00-3.00   sec   107 MBytes   899 Mbits/sec
[  4]   3.00-4.00   sec   105 MBytes   883 Mbits/sec
[  4]   4.00-5.00   sec   100 MBytes   838 Mbits/sec
[  4]   5.00-6.00   sec   106 MBytes   892 Mbits/sec
[  4]   6.00-7.00   sec   106 MBytes   894 Mbits/sec
[  4]   7.00-8.00   sec   105 MBytes   878 Mbits/sec
[  4]   8.00-9.00   sec   106 MBytes   890 Mbits/sec
[  4]   9.00-10.00  sec   108 MBytes   905 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  1.03 GBytes   886 Mbits/sec                  sender
[  4]   0.00-10.00  sec  1.03 GBytes   886 Mbits/sec                  receiver


Router to VM:
Connecting to host 10.39.0.1, port 5201
Reverse mode, remote host 10.39.0.1 is sending
[  4] local 10.39.1.232 port 62534 connected to 10.39.0.1 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   106 MBytes   887 Mbits/sec
[  4]   1.00-2.00   sec   103 MBytes   868 Mbits/sec
[  4]   2.00-3.00   sec   109 MBytes   916 Mbits/sec
[  4]   3.00-4.00   sec   107 MBytes   894 Mbits/sec
[  4]   4.00-5.00   sec   107 MBytes   895 Mbits/sec
[  4]   5.00-6.00   sec   109 MBytes   916 Mbits/sec
[  4]   6.00-7.00   sec   106 MBytes   893 Mbits/sec
[  4]   7.00-8.00   sec   111 MBytes   929 Mbits/sec
[  4]   8.00-9.00   sec   108 MBytes   907 Mbits/sec
[  4]   9.00-10.00  sec   109 MBytes   915 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.05 GBytes   903 Mbits/sec  809             sender
[  4]   0.00-10.00  sec  1.05 GBytes   902 Mbits/sec                  receiver

Between VM and Host

VM to Host:
Connecting to host 10.39.0.10, port 5201
[  4] local 10.39.1.232 port 62553 connected to 10.39.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  1.80 GBytes  15.5 Gbits/sec
[  4]   1.00-2.00   sec  1.71 GBytes  14.7 Gbits/sec
[  4]   2.00-3.00   sec  1.73 GBytes  14.8 Gbits/sec
[  4]   3.00-4.00   sec  1.77 GBytes  15.2 Gbits/sec
[  4]   4.00-5.00   sec  1.70 GBytes  14.6 Gbits/sec
[  4]   5.00-6.00   sec  1.89 GBytes  16.2 Gbits/sec
[  4]   6.00-7.00   sec  1.76 GBytes  15.1 Gbits/sec
[  4]   7.00-8.00   sec  1.72 GBytes  14.8 Gbits/sec
[  4]   8.00-9.00   sec  1.77 GBytes  15.2 Gbits/sec
[  4]   9.00-10.00  sec  1.73 GBytes  14.8 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  17.6 GBytes  15.1 Gbits/sec                  sender
[  4]   0.00-10.00  sec  17.6 GBytes  15.1 Gbits/sec                  receiver

Host to VM:
Connecting to host 10.39.0.10, port 5201
Reverse mode, remote host 10.39.0.10 is sending
[  4] local 10.39.1.232 port 62565 connected to 10.39.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  1.97 GBytes  16.9 Gbits/sec
[  4]   1.00-2.00   sec  2.07 GBytes  17.8 Gbits/sec
[  4]   2.00-3.00   sec  2.03 GBytes  17.5 Gbits/sec
[  4]   3.00-4.00   sec  2.03 GBytes  17.4 Gbits/sec
[  4]   4.00-5.00   sec  2.01 GBytes  17.3 Gbits/sec
[  4]   5.00-6.00   sec  1.97 GBytes  16.9 Gbits/sec
[  4]   6.00-7.00   sec  2.09 GBytes  17.9 Gbits/sec
[  4]   7.00-8.00   sec  2.07 GBytes  17.8 Gbits/sec
[  4]   8.00-9.00   sec  2.05 GBytes  17.6 Gbits/sec
[  4]   9.00-10.00  sec  2.04 GBytes  17.5 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  20.3 GBytes  17.5 Gbits/sec    2             sender
[  4]   0.00-10.00  sec  20.3 GBytes  17.5 Gbits/sec                  receiver

 

 

Edited by Pengy
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