Hello, i have a 10gbe network,
MTU 9000 everywhere : router, proxmox bridge, VM network adapter, system network adapter inside vm,
in my Windows 11 VM i have very strange HTTP speed.
Screenshot :
- on the left : Windows 11 VM (NOK : very slow openspeedtest)
- on the right : Windows 11 computer in the lan (OK : full speed 10 gbe)
Both use openspeedtest hosted inside podman in a rocky linux VM.
Both Windows use High performance power profile (with balanced or power saver you don't have full 10gbe).
Proxmox 8.2.4, everything updated today and server restarted, virtio-win-0.1.262-2/virtio-win-0.1.262.iso, windows insider build 22635.4005 in_release
When i copy files between VM and Windows PC via shared folder, i can have 10gbe speeds : OK (see network graph while copying test file)
But when i do openspeedtest a have very slow speed on the Windows 11 vm (703 down, 127 up, ping 16ms !!! ) : NOT ok
Why ? How to debug this ?
In my proxmox setup, i passthrough an NVME to a truenas VM,
witch shares back to proxmox an NFS share,
then all other vm disks are stored inside the thuenas NFS share and run from there (including windows VM).
Because speed is OK when copying file, network config looks right (shared folder on the vm, then copy file between windows pc and windows vm on 10gbe).
Because openspeedtest between windows PC and rocky linux VM gives 10gbe speed, the rocky VM (hosting openspeedtest) config seems OK.
I did a speedtest to the internet with speedtest, the VM is even faster than the windows pc.
I tryed to do the test with other web browsers, same result, so this is not a browser issue.
Below you have screenshots of proxmox config : proxmox bridge, windows vm, rocky vm, truenas vm ...
Also i have zorin/mint VMs, and the same openspeedtest gives better result 4000 down, 2000 up ping 1ms.
Best regards
o
MTU 9000 everywhere : router, proxmox bridge, VM network adapter, system network adapter inside vm,
in my Windows 11 VM i have very strange HTTP speed.
Screenshot :
- on the left : Windows 11 VM (NOK : very slow openspeedtest)
- on the right : Windows 11 computer in the lan (OK : full speed 10 gbe)
Both use openspeedtest hosted inside podman in a rocky linux VM.
Both Windows use High performance power profile (with balanced or power saver you don't have full 10gbe).
Proxmox 8.2.4, everything updated today and server restarted, virtio-win-0.1.262-2/virtio-win-0.1.262.iso, windows insider build 22635.4005 in_release
When i copy files between VM and Windows PC via shared folder, i can have 10gbe speeds : OK (see network graph while copying test file)
But when i do openspeedtest a have very slow speed on the Windows 11 vm (703 down, 127 up, ping 16ms !!! ) : NOT ok
Why ? How to debug this ?
In my proxmox setup, i passthrough an NVME to a truenas VM,
witch shares back to proxmox an NFS share,
then all other vm disks are stored inside the thuenas NFS share and run from there (including windows VM).
Because speed is OK when copying file, network config looks right (shared folder on the vm, then copy file between windows pc and windows vm on 10gbe).
Because openspeedtest between windows PC and rocky linux VM gives 10gbe speed, the rocky VM (hosting openspeedtest) config seems OK.
I did a speedtest to the internet with speedtest, the VM is even faster than the windows pc.
I tryed to do the test with other web browsers, same result, so this is not a browser issue.
Below you have screenshots of proxmox config : proxmox bridge, windows vm, rocky vm, truenas vm ...
Also i have zorin/mint VMs, and the same openspeedtest gives better result 4000 down, 2000 up ping 1ms.
Best regards
o
Attachments
Last edited: