High CPU Usage and Low Virtual Network Performance with Proxmox 7.3 vs. 6.4

ams123

Active Member
Jan 19, 2017
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I have been struggling with my virtual network performance for a while now, detailed here (TLDNR - all connections over a virtual bridge are slow {VM to VM or VM to intranet} but Proxmox host is fast):
https://forum.proxmox.com/threads/poor-vm-networking-performance.119165/#post-516977

To help me diagnose I did a clean install, no improvement. Then I did a clean install of 6.4 and it worked great for both CPU load and virtual network speed. I changed absolutely nothing between the two installs using the same config files and network settings.

I have seen this post about the scheduler and with 7.3 my cpu is set to performance for all cores.
https://www.reddit.com/r/Proxmox/comments/rizypw/upgrade_to_proxmox_7_reduced_performance_on_my/

I know my hardware is older and some consider under powered but it works great with 6.4.

Looking for any suggestions.

Thanks,
 

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