6.9.2: Failed to mmap 0000:01:00.0 BAR 3. Performance may be slow

[AJGSE]

I have a computer running unraid 6.9.2 with 3 video cards and running 3 VMs each with its own dedicated video card. I made sure by pcie_acs_override=downstream that there are 3 different IOMMU groups.

 

Now I have the problem that the first video card responds slowly, so this VM can't actually be used for the application we need it for.

 

Error Message: Failed to mmap 0000:01:00.0 BAR 3. Performance may be slow.

 

Can someone help me to solve this so that we can also use the 3rd computer.

kuchenwelt4-diagnostics-20210609-1502.zip

[John_M]

Is the affected card the one that the server uses by default for its own output - the BIOS screen and Unraid boot menu, for example? I don't see the 10700K's iGPU listed in your diagnostics - is it disabled? You could set it as the primary GPU in the BIOS, which should avoid the problem of the GT 710 not detaching.