Is Linux 3.13, the worst kernel version, ever? YES! It is... So, why Trust come with it? WHY!?

[Martinx - ジェームズ]

Liam,

Yes, I can change my opinion and talk about it, *including/ specially* when
I'm wrong.

Tom, I'm using Gnome 3.10 (Ubuntu 14.04) as a KVM Virtual Machine,
flawlessly. But I'm using SPICE VDI as a "virtual video voard (QXL)", the
only thing I did to improve Gnome guest video performance, was adding the
following line to /etc/X11/xorg.cong (`Xorg -configure` within guest):

-
Option "ENABLE_SURFACES" "False"
-

To "Section "Device"" of my qxl Driver...

I'm a heavy user of KVM on lots of DataCenters, its memory manager (Linux),
powered by KSM, is impressive, I'm saving about 55~65% of RAM memory, for
the entire cluster / private cloud. Which means that without KVM+KSM (i.e.
with obscure and unstable VirtualBox / VMWare / Hyper-V / etc), more
hardware will be required just to keep things up and running smoothly.

It was not my intention to spread FUD, the problem, I think, is when some
company releases something labeled as "stable", *when it is not*. Lesson
learned the hard way... Nights awake... Moving on, fix released...

Ubuntu FTW!   :-P


On 5 August 2014 13:00, Tom H <tomh0665 at gmail.com> wrote:

> On Tue, Aug 5, 2014 at 9:45 AM, Liam Proven <lproven at gmail.com> wrote:
> > On 5 August 2014 15:33, Tom H <tomh0665 at gmail.com> wrote:
> >>
> >> QEMU and KVM obscure?!
> >
> > Well, actually, seriously, yes! They're server-centric tools for
> > professionals who know what they're doing.
> >
> > Ubuntu is primarily a *desktop* distro. The main FOSS desktop
> > hypervisor is, I'd say, VirtualBox and the main freeware proprietary
> > one VMware Player. Then, after that, Microsoft VirtualPC and Hyper-V.
> >
> > As I discovered in $JOB-1, KVM is no help at all if, for example, what
> > you're doing is documenting a distro which uses GNOME Shell as its UI.
> > GNOME Shell requires hardware OpenGL acceleration to run in a usable
> > fashion. (So does Unity.) KVM doesn't provide that -- it's aimed at
> > running server instances with no GUI.
> >
> > VirtualBox does this quite well if you install the Guest Additions.
> >
> > So even inside a prominent Linux vendor, which ships KVM as its
> > standard hypervisor, for the copany's own tech writers, VirtualBox is
> > a better, more suitable tool.
> >
> > I am not saying there's anything wrong with KVM -- it's a fine tool,
> > for its purpose. However, if you're a desktop user and you want to try
> > out different distros, or run a single Windows app that you need (e.g.
> > IE or Silverlight), then KVM is really not much help at all.
> >
> > If you want to test ARM code on a virtual ARM machine, or you want to
> > run virtual servers containing databases and groupware and web apps,
> > then KVM is just the ticket -- but I suspect that the typical Ubuntu
> > user doesn't actually want or need that.
> >
> > And personally, I don't want or need it, whereas I do need to evaluate
> > distros quite regularly -- e.g. for this:
> >
> > http://www.theregister.co.uk/2013/04/26/xbuntu_round_up/
> >
> > I used VirtualBox /extensively/ for that, but KVM wouldn't have helped
> me.
>
> The majority of users on this list MIGHT be desktop users but Ubuntu's
> been a pioneer in developing and adopting cloud technologies and its
> the number one distribution, by far, on AWS.
>
> I've never tried to use Unity or Gnome Shell with KVM but I'll take
> your word that it wouldn't work because of missing OpenGL support.
> However Gnome has a GUI frontend for KVM called Boxes. I've never used
> it but its networking options are limited to basic slirp natting,
> which is only useful for a non-server, so they might/must have made
> Gnome Shell available via Boxes (with spice or vnc graphics?),
> especially given how keen they are to prmotoe their own stuff.
>
> But KVM is used heavily with Ubuntu in server rooms (I've worked on
> two 200-plus deployments in the last year), so calling it obsure is
> something of an exaggeration.
>
> The OP's style was ridiculous but he had a legitimate problem, albeit
> one that didn't apply to all KVM users because he was using KSM.
>
> --
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