This morning, all VM's (old, new, recently updated, not recently updated) suddenly are extremely slow.  On 6.11.5.

The UNRAID GUI seems fine and snappy, it's just the VM's.  Opening a console window on a VM that worked fine yesterday brings up

a sluggish console window - very very slow to resize.  Running 'top' in that window VM shows nothing consuming large CPU resources or

memory for that VM, adequate free space and CPU. Five or Six Ubuntu 20.04 and 22.04 VMs tried, all slow as molasses.

Running Firefox in the VM is almost impossible, 10-12 seconds to respond to each mouse click, but it does function correctly eventually. All services run by VM are almost ground to a halt.

 

Only update this morning was I think unassigned devices plugin 2023.04.17

 

Rebooted the server, no improvement.  Server memory, disk stats look fine. Network working correctly.

 

Docker images come up fine and the GUI is very responsive, so this seems isolated to just the VMs.

 

Diagnostics attached.

 

-- Tom

tower-diagnostics-20230418-1000.zip

Nothing obvious that I can see, is the NVMe device performing normally for e.g. a file transfer? Reads and writes.

Hi JorgeB - thanks for the reply!   Using the console to transfer large files between NVMe and HardDrives

is very fast in both directions, no errors.

 

-- Tom

 

 

 

No more ideas, maybe try creating a new VM to see if it's the same.

Found the problem.

 

It appears the VNC VM GUI display does not play well with Firefox 112.0.1 on the Ubuntu client. The previous days version

of Firefox worked fine, so likely the latest update (I think this is the most current version).  I cleared browser cache

on the Firefox client - that did not improve anything.

 

I launched Chrome 112.0.5615.121  on the Ubuntu client, and that works well with the VMs.

 

-- Tom

 

 

Edited April 19, 20233 yr by Tom3
clarify Firefox versions

The update to Firefox 113.0 has resolved the noVNC problem.  It appears that 112.x.x versions have the issue.

 

-- Tom