Re: Xen vs KVM

On 29 March 2012 22:59, Tom H <tomh0665@xxxxxxxxx> wrote:
On Thu, Mar 29, 2012 at 12:32 PM, francis picabia <fpicabia@xxxxxxxxx> wrote:

Xen requires a patched kernel.  It is unstable.  It crashed on
me randomly before I got as far as configuring any VM stuff.
The system which experienced this returned to a standard
Debian kernel and never had a problem again.

KVM is native part of kernel.  It is stable.  I've been running on several
systems for over a year and no crash.

Both share the same qemu devices and drivers land.

You can read what IBM has to say about key benefits and security
features of kvm...

ftp://ftp.software.ibm.com/linux/pdfs/LXW03004-USEN-00.pdf

A big clue is Redhat is dropping xen virtualization going forward.

Kvm will get more development support than xen.

I see no reason to even consider xen.

It's something of a stretch to go from "it's unstable for me" to "it's
unstable for all"... Since RHEL6 was published in November 2010, the
level of kvm use might have reached or surpassed the level of xen use
by now but xen's still in heavy use by many...

Unless there's a fedora-devel thread where this was discussed, there's
probably no way to know why RHEL6 switched to kvm except to assume
that kvm's in-kernel and xen isn't. This has changed in the latest
kernels so xen support might very well be re-added, and possibly
favored, in RHEL7.

RH employs some of the KVM devs. RH apparently has not contributed to
Xen for several years and has now decided to only support a single
code base: KVM. It does not appear to have anything to do with Xen or
its quality/performance/features.


--
To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx
with a subject of "unsubscribe". Trouble? Contact listmaster@xxxxxxxxxxxxxxxx
Archive: http://lists.debian.org/CAE1pOi2xCrw=GR+tGymkojW6a9woNSESaQE74yve14UmTO5XaA@xxxxxxxxxxxxxx

Relevant Pages

  • kvm-oops
    ... kvm running winxp as guest ... # Linux kernel version: 2.6.23-gentoo-r3 ... # PCCARD support ... # Device Drivers ...
    (Linux-Kernel)
  • Re: VM software for personal use?
    ... Some version of QEMU with KVM will always work, but you definitely need the KVM bits, because by itself QEMU is not a speed demon. ... Xen itself is still in a state of flux, and though the 2.6.32 kernel version is much more stable than previous versions, I wouldn't call it ready for prime time. ... To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx with a subject of "unsubscribe". ...
    (Debian-User)
  • RE: KVM FYI
    ... Belkin KVM! ... It is *not* a good attitude that old hardware will no longer be ... > This is more of a kernel issue. ...
    (Fedora)
  • [RFC] Unify KVM kernel-space and user-space code into a single project
    ... Having to run a separate tool like perf is not going to be what they would ... perf is mainly a kernel developer tool, ... I wish both you and Avi looked back 3-4 years and realized what made KVM so ...
    (Linux-Kernel)
  • Re: how to start the sound system
    ... Sarge might be too old to support your hardware. ... The only difference is that i have the kernel 2.6.19rc2. ... Maybe it is better to try getting the sound ... To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx ...
    (Debian-User)