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

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I think they're using this:
www.thesycon.de/deu/latency_check.shtml
On Oct 29, 2015 6:11 AM, "Eddie Yen" <missile0407 at gmail.com> wrote:

> Sorry, but how to check DPC Latency?
>
> 2015-10-29 10:08 GMT+08:00 Nick Sukharev <nicksukharev at gmail.com>:
>
>> I just checked on W7 and I get 3000μs-4000μs one one of the guests when
>> 3 guests are running.
>>
>> On Wed, Oct 28, 2015 at 4:52 AM, Sergey Vlasov <sergey at vlasov.me> wrote:
>>
>>> 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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>>>
>>
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>
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