[vfio-users] problem with hugepages and sound

[Eddie Yen]

I'm still solving sound issue either, but for FPS problem, I saw your
scripts.
Seems like you didn't add Hyper-V functions on -cpu signs.

It's necessary to delete Hyper-V functions if using NVIDIA GPU, but you're
using AMD, so you can add Hyper-V functions on your -cpu sign.

2015-11-05 6:04 GMT+08:00 Janusz <januszmk6 at gmail.com>:

> W dniu 04.11.2015 o 22:41, Tomasz Jan Góralczyk pisze:
> >
> > On 04/11/15 20:15, Janusz wrote:
> >> Hi,
> >> I have two questions,
> >> Sometimes I have some short freezes and fps drops in GTA 5, so I wanted
> >> to try hugepages if it would give me better perfornance, but in fact it
> >> gave me -10 fps and drops to 20-30 fps (while without it I have 60 with
> >> drops to 40). Did anyone experiecned worst performance with hugepages?
> >> maybe I am doing something wrong?
> >> my script: https://bpaste.net/show/9089719cbef8
> >>
> >> Second question, I know this is vfio group but I don't know where else
> >> would be better to ask, becauseeverywhere where I asked, no one know how
> >> to fix it. I am using pulseaudio and I have some audio glitches, some
> >> crackles, don't know exactly how to describe it... It looks like VM is
> >> affecting my audio even before OVMF loads (starting VM) and it happens
> >> the whole time when I get some sound from VM. anyone know what can cause
> >> this? I tried different soundhw, sometimes I didn't get any disortion in
> >> the sound, but then the sound was behind something like 1 second. I have
> >> the same frequency in pulsaudio set like in windows settings. I even
> >> bought usb sound card, to passthrough it and redirect this sound from VM
> >> into my main sound card - poor quality. also tried streaming from
> >> windows by linco, ssh and pacat - got some delays, port of pulseaudio
> >> for windows - didn't managed to make it work... I know there is one more
> >> alternative - Jackd, but maybe someone have idea how to fix it before I
> >> start looking in jackd configuration...
> >> I also tried without pulseaudio on host, just alsa, and didn't helped
> > I also had the same problem with audio and the only way I could fix it
> > was by passing through my onboard sound card via vfio. I had to `rmmod`
> > the snd_hda_intel module before binding the sound card's vfio group to
> > make it work. Obviously, it's not ideal since the card can't be shared
> > between the host and the guest, but you already have an USB soundcard,
> > so why not use that on the host? After I'm done with the guest, I shut
> > it down, unbind the sound card's vfio group and `modprobe` the
> > snd_hda_intel module to get audio back up on the host. Note that
> > Pulseaudio won't let you unload your sound card's kernel module, while
> > it's running.
> >
> > I have an ASUS Z97 board and a 4790k, so ymmv.
> >
> >
> this is some kind of way of solving this, but I only want to get sound
> from games in VM, and I want sometimes listen some music on host, have
> TeamSpeak running, or watch some movie without turning off VM. If this
> is common issue, I wonder why still no one was able to fix this
>
> _______________________________________________
> vfio-users mailing list
> vfio-users at redhat.com
> https://www.redhat.com/mailman/listinfo/vfio-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/vfio-users/attachments/20151105/9e5e32c4/attachment.htm>