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New View the Bug / Feature Tracker

[6.9.2] Adding VMs to br0 slows performance using AQC107 10Gbe ethernet

By DuckBrained

· 827 views
  • Minor

My configuration: I have a Mac laptop with a 10Gbe hub. I have an UnRAID server with 10Gbe NIC, an AQC107 chipset model built into the motherboard.

 

I have eth0 configured with br0 for VMs.

 

When I run iperf3 between the Mac and the server, I get full speeds 10Gbps as expected.

 

However, as I boot each virtual machine that's assigned to br0, the iperf3 performance drops by approximately 1Gbps per VM booted. I also see CPU usage spikes on cores that are isolated and shouldn't be usable by UnRAID itself.

 

Full diagnostic process available in this thread.

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