[ale] VirtualBox v6 vs KVM Performance

[Horkan Smith]

Hi Raj,

I might be missing what you're trying to do, but I use KVM pretty frequently while I'm on wifi.  If you're using -net user (the default) the guest just sees a wired nic w/ a 10.x address that's NAT'ed to whatever internet the host is using currently.

Whenever I feel the need to crank up a VM'd copy of knoppix, I run this script:

---cut here----

KNOPISO=/sdata/cdroms/knoppix/KNOPPIX_V7.0.4CD-2012-08-20-EN.iso

#
echo knoppix hsync=300 vsync=300 screen=1680x1050
#
kvm \
 -monitor stdio \
 -boot d \
 -cdrom $KNOPISO \
 -m 1024 \
 -vga std \
 -usb \
 -usbdevice tablet \
 -net nic,vlan=0 -net user,vlan=0 \
 $*

---cut here----

Different distros and package selections have varied the actual command to invoke kvm over the years - try 'qemu-system-x86_64 -enable-kvm' if using 'kvm' by itself doesn't work.

There are a *lot* of other networking options for qemu/kvm.  Let me know if you need something fancier and I'll try to help.

If you're trying to directly control the wifi card from the guest... that's going to be harder.  I haven't done it, but you might be able to treat the host's wifi card as an external USB or PCI device and grant control to the guest that way.

later!
   horkan


On Mon, Dec 31, 2018 at 09:15:34AM -0500, Raj Wurttemberg via Ale wrote:
>I like an really want to use KVM on my laptop (big-beefy Lenovo with 32 GB)
>but I struggle to get KVM to work with the wireless NIC.  After a few hours,
>I gave up and installed VirtualBox (sigh).
>
>Yes... I know... KVM is really meant for wired "servers".  Maybe I'm missing
>something obvious.
>
>/Raj
>
>-----Original Message-----
>From: Ale <ale-bounces at ale.org> On Behalf Of DJ-Pfulio via Ale
>Sent: Monday, December 31, 2018 6:25 AM
>To: Atlanta Linux Enthusiasts <ale at ale.org>
>Subject: [ale] VirtualBox v6 vs KVM Performance
>
>The short answer is to use KVM if you care at all about performance.
>https://www.phoronix.com/scan.php?page=article&item=virtualbox-60-kvm
>
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-- 
Horkan Smith
678-777-3263 cell, ale at horkan.net