[vfio-users] Brutal DPC Latency - how is yours? check it please and report back

[Sergey Vlasov]

On 27 October 2015 at 18:38, LordZiru <lordziru at gmail.com> wrote:

> I have brutal DPC Latency on qemu, no matter if using pci-assign or
> vfio-pci or without any passthrought,
>
> my DPC Latency is like:
> 10000,500,8000,6000,800,300,12000,9000,700,2000,9000
> and on native windows 7 is like:
> 20,30,20,50,20,30,20,20,30
>

In Windows 10 guest I constantly have red bars around 3000μs
(microseconds), spiking sometimes up to 10000μs.


> I don't know how to fix it.
> this matter for me because i are using USB Sound Card for my VMs,
> and i get sound drop-outs every 0-4 secounds
>
>
That bugs me a lot too. I also use an external USB card and my DAW
periodically drops out :(

I haven't tried CPU pinning yet though. And perhaps I should try Windows 7.
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