What are you using to provide audio output on the host system? PulseAudio?
ALSA directly?
At least when I last looked, Jack was used for professional (low-latency)
audio. However, I don't know whether it can be connected to a virtual
machine. If you aren't running KVM as your virtualization solution, it might
be worth trying, as it's receiving a lot of attention in serious
environments these days (Red Hat, Linode, etc.).
-----Original Message-----
From: Blind-sysadmins
[mailto:blind-sysadmins-bounces@lists.hodgsonfamily.org] On Behalf Of
Darragh Ó Héiligh
Sent: Sunday, July 16, 2017 5:22 PM
To: Blind sysadmins list
Subject: [Blind-sysadmins] Low latency sound in virtual machines.
My ideal setup would be to run a really simple Linux desktop with no GUI on
this workstation and fire up VM's for my guest machines but when I've tried
to do this, I encounter too many issues with performance even on a really
beefy system. Many of these performance issues seem to be perceived and not
actually happening. I'm perceiving them because the screen reader I'm using
is lagging just slightly behind me compared to standard use.
This really well written article suggests ways around this but I'm not sure
if I'm going to invest the time into researching it's suitability for my
particular situation.
https://blog.bryansmart.com/2012/02/16/low-latency-sound-for-vmware/
I use Windows 10 for everything from system administration, .net
development, testing and audio editing.
I want Linux at the core because when it's just running the console, it just
works. I've never had a Linux system fail on me for software reasons when
it's just running for this purpose. If I'm using virtual machines, I can
easily create and restore from snapshots when needed.
The workstation is a strong spec:
2 8 core Xeon processors:
64GB RAM
A high speed SSD RAID Array system that I really don't understand. It's
using 2 SSD disks enclosed in one case with a RAID controller.
I've one 1TB SSD data disk
Then another few 2TB data disks.
Just for the fun of it, there's an Nvidia Geforce GTX970 graphics card
Finally a Sound blaster ZXR DB Pro card
I built this machine for the purpose of running VM's but for various
reasons, it's never really been able to do it. Mainly because of screen
reader issues.
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