kvm and/or kqemu?
Hi,
I am not really in touch with emulator/virtualizer technology. I used to use Qemu for cross packaging software (running Ubuntu as host, packaging for Fedora/Debian/Other in 32/64bits in guests).
I love packaging ;-).
I asked for a while on Ubuntu/Debian ML for the way yo have kqemu packaged. I heard for the kvm possibility [1].
What is kvm related to kqemu:
- a replacement?
- a fork?
- another way to accelerate qemu?
My use case:
I have mixed computers.
- some 32bit without VT,
- some 64Bit may be with or without VT
- I am planning to buy a Core 2 Duo for Xmas.
I package for Debian 32 & 64 bit and Fedora 32 & 64, and I run the system I package for into Qemu.
I use Qemu to package on all my computers as well as I move. I really want kqemu (or kvm if it's what I need) to be installed as a package but not compiled from source on my Ubuntu hosts.
Is KVM a tool I could need?
Thank you.
[1]
http://www.nabble.com/build-my-own-kqemu-and-install-it-debian-way-t2709082.html#a7554284
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KVM stands for Kernel Virtual Machine. It is actually a Virtual Machine Monitor kernel module. It uses Qemu for its device model like Xen does. Nevertheless, it can be though as a qemu accelerator too. For using KVM you can either compile the sources or get the debian packages from http://baruch.ev-en.org/blog/Debian/kvm-in-debian thanks to Baruch Even.
Good luck with the packaging :)
-----Original Message-----
From: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org [mailto:kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of Mihamina Rakotomandimby
Sent: Tuesday, November 28, 2006 10:14 AM
To: [email protected]
Subject: [kvm-devel] kvm and/or kqemu?
Hi,
I am not really in touch with emulator/virtualizer technology. I used to use Qemu for cross packaging software (running Ubuntu as host, packaging for Fedora/Debian/Other in 32/64bits in guests).
I love packaging ;-).
I asked for a while on Ubuntu/Debian ML for the way yo have kqemu packaged. I heard for the kvm possibility [1].
What is kvm related to kqemu:
- a replacement?
- a fork?
- another way to accelerate qemu?
My use case:
I have mixed computers.
- some 32bit without VT,
- some 64Bit may be with or without VT
- I am planning to buy a Core 2 Duo for Xmas.
I package for Debian 32 & 64 bit and Fedora 32 & 64, and I run the system I package for into Qemu.
I use Qemu to package on all my computers as well as I move. I really want kqemu (or kvm if it's what I need) to be installed as a package but not compiled from source on my Ubuntu hosts.
Is KVM a tool I could need?
Thank you.
[1]
http://www.nabble.com/build-my-own-kqemu-and-install-it-debian-way-t2709
082.html#a7554284
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Quoted 3 lines · Dor Laor
KVM stands for Kernel Virtual Machine. It is actually a Virtual Machine Monitor kernel module. It uses Qemu for its device model like Xen does. Nevertheless, it can be though as a qemu accelerator too.
Does KVM make any use of the VT technology? In other words, does the VT technology faster virtualization in any way if I use KVM? Has someone experienced performances comparison between qemu+kvm and qemu+kqemu? (boot time, compiling the same software,...).
If no one has, I might try it myself.
Quoted 2 lines
For using KVM you can either compile the sources or get the debian packages from http://baruch.ev-en.org/blog/Debian/kvm-in-debian
I know this link, thanks ;-)
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At Tue, 28 Nov 2006 11:04:32 +0100,
Quoted 11 lines · Mihamina Rakotomandimby
Quoted 3 lines · Dor Laor
KVM stands for Kernel Virtual Machine. It is actually a Virtual Machine Monitor kernel module. It uses Qemu for its device model like Xen does. Nevertheless, it can be though as a qemu accelerator too.
Does KVM make any use of the VT technology? In other words, does the VT technology faster virtualization in any way if I use KVM? Has someone experienced performances comparison between qemu+kvm and qemu+kqemu? (boot time, compiling the same software,...).
If no one has, I might try it myself.
Yes - it requires VT or the AMD equivalent. It should also be faster than pure qemu+kqemu, but this is a guess from my side.
One of the nice things about KVM, to me at least, is that it "looks" just like qemu - it's run as a normal command under Linux and you can easily switch between "pure" qemu and KVM+qemu.
// Simon
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Quoted 8 lines
At Tue, 28 Nov 2006 11:04:32 +0100,
Quoted 3 lines · Mihamina Rakotomandimby
Quoted 1 line · Dor Laor
KVM stands for Kernel Virtual Machine. It is actually a Virtual
Machine
Quoted 1 line
Quoted 1 line
Monitor kernel module. It uses Qemu for its device model like Xen
does.
Quoted 3 lines
Quoted 3 lines
Quoted 1 line
Nevertheless, it can be though as a qemu accelerator too.
Does KVM make any use of the VT technology? In other words, does the
VT
Quoted 4 lines
Quoted 4 lines
technology faster virtualization in any way if I use KVM? Has someone experienced performances comparison between qemu+kvm and qemu+kqemu? (boot time, compiling the same software,...). If no one has, I might try it myself.
It would be great if you'll publish comparison of the two.
I believe that kvm will outperform kqemu in CPU benchmark, but might be a little slower on I/O. KVM runs on the bare CPU using VT/SVM while kqemu need to run in emulation mode when executing kernel code.
Quoted 11 lines
Yes - it requires VT or the AMD equivalent. It should also be faster than pure qemu+kqemu, but this is a guess from my side.
One of the nice things about KVM, to me at least, is that it "looks" just like qemu - it's run as a normal command under Linux and you can easily switch between "pure" qemu and KVM+qemu.
// Simon
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your
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Quoted 4 lines
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