[vfio-users] Significant FPS drop with AMD and GTX970

[Andrei Grigore]

Could it be an issue caused by the MB chipset (990-fx)? How can you debug
something like this?

On Oct 8, 2016 15:46, "Andrei Grigore" <andrei.grg at gmail.com> wrote:

> Pretty sure, yes. Under: /etc/modprobe.d , then rebuilt the initramfs with
> mkinitcpio -p linux and rebooted.
>
> On Oct 8, 2016 15:44, "Rokas Kupstys" <rokups at zoho.com> wrote:
>
>> Sure you put config in the right place? Because depending on how kernel
>> modules are compiled config go to different places.
>>
>>
>>
>> Sent from my Samsung device
>>
>>
>> -------- Original message --------
>> From: Andrei Grigore <andrei.grg at gmail.com>
>> Date: 10/8/16 16:14 (GMT+02:00)
>> To: Rokas Kupstys <rokups at zoho.com>
>> Cc: vfio-users <vfio-users at redhat.com>, Jayme Howard <g.prime at gmail.com>
>> Subject: Re: [vfio-users] Significant FPS drop with AMD and GTX970
>>
>> Just tried. No improvement.
>>
>> On Oct 8, 2016 14:43, "Rokas Kupstys" <rokups at zoho.com> wrote:
>>
>>> See https://bbs.archlinux.org/viewtopic.php?id=162768 first post. See
>>> if you need ignore_msrs or allow_unsafe_interrupts. I had similar issue
>>> with and board and some module options fixed it I think.
>>>
>>>
>>> Sent from my Samsung device
>>>
>>>
>>> -------- Original message --------
>>> From: Andrei Grigore <andrei.grg at gmail.com>
>>> Date: 10/8/16 10:49 (GMT+02:00)
>>> To: Jayme Howard <g.prime at gmail.com>
>>> Cc: vfio-users <vfio-users at redhat.com>
>>> Subject: Re: [vfio-users] Significant FPS drop with AMD and GTX970
>>>
>>> Unfortunately, that didn't help. Thanks for the sugestion though!
>>>
>>> On Oct 8, 2016 03:06, "Jayme Howard" <g.prime at gmail.com> wrote:
>>>
>>>> Check to see if you have MSI enabled.  That'd be my bet.  Alex had a
>>>> blog post that covered it, but I don't have the link handy.
>>>>
>>>> On Fri, Oct 7, 2016 at 6:39 PM, Andrei Grigore <andrei.grg at gmail.com>
>>>> wrote:
>>>>
>>>>> Hi all,
>>>>>
>>>>> I was wondering if anyone is experiencing this and if there is a known
>>>>> fix for it.
>>>>>
>>>>> I am using ArchLinux with latest stable Kernel, qemu and libvirt.
>>>>>
>>>>> My CPU is FX-8230 with a GTX 970. I've passed thorugh the GPU to a
>>>>> Win10 guest.
>>>>>
>>>>> In WoW on bare metal i get 90 fps and in the same area with the same
>>>>> graphic settings on the VM i get around 50. There seems to be no cpu and or
>>>>> ram bottlenet and the GPU seems to be quite gully used since the fans are
>>>>> starting to spin quite soon.
>>>>>
>>>>> Can anyone help here with a suggestion? I saw reports with about 3%
>>>>> performance drop, but I am experiencing a lot more.
>>>>>
>>>>> Thanks!
>>>>> Andrei.
>>>>>
>>>>> _______________________________________________
>>>>> vfio-users mailing list
>>>>> vfio-users at redhat.com
>>>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>>>
>>>>>
>>>>
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