Audio performance in guest VM (MS-Win) on Linux host

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[Music] A short orchestral piece

jack2 help?

bdutta

10 Aug 2019 10 Aug '19

12:33 p.m.

Hi, Is anyone aware of any comparative study of various hypervisors (KVM, VMware, Virtualbox) running Windows guests, on Linux hosts -- in respect of quality of audio software, in terms of latency, jitter, glitches etc. Based on my reading, I've understood that accuracy and reliability of the timer interrupt available to guest kernel (in VM) should not be expected to be equal to same on bare-metal. However, are there some hypervisors (workstation oriented), that are better than others in this regard ? The question is in context of need to run some Windows software which doesn't work well under WINE (even with WineASIO, various recommended WINE tricks applied), and I find the need to setup/maintain a dual-boot environment too cumbersome, as I do 90% of my work in Linux. regards, BD -- Sent from: http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html

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Hans Wilmers

10 Aug 10 Aug

6:52 p.m.

Hi, there are several possibilities to make the guest OS access USB peripherals (almost) directly: USB Redirect and USB Passthrough https://github.com/kimduho/kvm/wiki/KVM-USB-Redirect-or-Passthrough I can select USB redirect comfortably using a spice client, and a KVM virtual machine on another machine - and it works fine even over the network. / Hans --- Hans Wilmers Notam Sandakerveien 24 D, bygg F3 N-0473 Oslo Norway tlf.: +47 22358060 mob.: +47 92459361 http://www.notam02.no On 10/08/2019 10:34, bdutta wrote:

...

Banibrata Dutta

16 Aug 16 Aug

9:09 a.m.

...

Hi, Is anyone aware of any comparative study of various hypervisors (KVM, VMware, Virtualbox) running Windows guests, on Linux hosts -- in respect

quality of audio software, in terms of latency, jitter, glitches etc.

Based

on my reading, I've understood that accuracy and reliability of the timer interrupt available to guest kernel (in VM) should not be expected to be equal to same on bare-metal. However, are there some hypervisors (workstation oriented), that are better than others in this regard ? The question is in context of need to run some Windows software which doesn't work well under WINE (even with WineASIO, various recommended

WINE

tricks applied), and I find the need to setup/maintain a dual-boot environment too cumbersome, as I do 90% of my work in Linux. regards, BD -- Sent from:

http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html

_______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-user

-- regards, Banibrata http://www.linkedin.com/in/bdutta http://twitter.com/edgeliving

Hans Wilmers

2:38 p.m.

Hi Banibrata, using USB redirect, the guest os is using its own driver, so I would imagine guest kernel behaviour plays a role. In my setting, "simple" listening works fine, but low latency causes dropouts, which is not surprising as there is a busy network in between. You may have better luck with the guest directly on the client machine. / Hans --- Hans Wilmers Notam Sandakerveien 24 D, bygg F3 N-0473 Oslo Norway tlf.: +47 22358060 mob.: +47 92459361 http://www.notam02.no On 16/08/2019 07:09, Banibrata Dutta wrote:

...

Thank you for the reply Hans.So using USB redirect, I can access any USB audio interface, but shouldn't have to worry too much about the interrupt latency or guest kernel behaviour, when it comes to low-latency behaviour ? On Sat, Aug 10, 2019 at 8:22 PM Hans Wilmers <hanswil(a)notam02.no <mailto:hanswil@notam02.no>> wrote: Hi, there are several possibilities to make the guest OS access USB peripherals (almost) directly: USB Redirect and USB Passthrough https://github.com/kimduho/kvm/wiki/KVM-USB-Redirect-or-Passthrough I can select USB redirect comfortably using a spice client, and a KVM virtual machine on another machine - and it works fine even over the network. / Hans --- Hans Wilmers Notam Sandakerveien 24 D, bygg F3 N-0473 Oslo Norway tlf.: +47 22358060 mob.: +47 92459361 http://www.notam02.no On 10/08/2019 10:34, bdutta wrote:

Hi, Is anyone aware of any comparative study of various hypervisors (KVM, VMware, Virtualbox) running Windows guests, on Linux hosts -- in

respect of

quality of audio software, in terms of latency, jitter, glitches

etc. Based

on my reading, I've understood that accuracy and reliability of

the timer

interrupt available to guest kernel (in VM) should not be expected

to be

equal to same on bare-metal. However, are there some hypervisors (workstation oriented), that are better than others in this regard ? The question is in context of need to run some Windows software which doesn't work well under WINE (even with WineASIO, various

recommended WINE

tricks applied), and I find the need to setup/maintain a dual-boot environment too cumbersome, as I do 90% of my work in Linux. regards, BD -- Sent from:

http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html

_______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org

<mailto:Linux-audio-user@lists.linuxaudio.org>

https://lists.linuxaudio.org/listinfo/linux-audio-user

_______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org <mailto:Linux-audio-user@lists.linuxaudio.org> https://lists.linuxaudio.org/listinfo/linux-audio-user -- regards, Banibrata http://www.linkedin.com/in/bdutta http://twitter.com/edgeliving

Banibrata Dutta

3:16 p.m.

Thanks again Hans. Will try and get back, probably over the weekend. On Fri, Aug 16, 2019 at 4:08 PM Hans Wilmers <hanswil(a)notam02.no> wrote:

...

(KVM,

VMware, Virtualbox) running Windows guests, on Linux hosts -- in

respect of

quality of audio software, in terms of latency, jitter, glitches

etc. Based

on my reading, I've understood that accuracy and reliability of

the timer

interrupt available to guest kernel (in VM) should not be expected

to be > equal to same on bare-metal. However, are there some hypervisors > (workstation oriented), that are better than others in this regard

> > The question is in context of need to run some Windows software

which

doesn't work well under WINE (even with WineASIO, various

recommended WINE

tricks applied), and I find the need to setup/maintain a dual-boot environment too cumbersome, as I do 90% of my work in Linux. regards, BD -- Sent from:

http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html

_______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org

<mailto:Linux-audio-user@lists.linuxaudio.org>

https://lists.linuxaudio.org/listinfo/linux-audio-user

-- regards, Banibrata http://www.linkedin.com/in/bdutta http://twitter.com/edgeliving

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Banibrata Dutta
bdutta
Hans Wilmers