Xen for Human Beings

[Andrew Conkling]

I think this is no longer -devel discussion.

On 4/26/06, Matthew Palmer <mpalmer at hezmatt.org> wrote:
> On Wed, Apr 26, 2006 at 11:40:50AM -0700, Erast Benson wrote:
> > > Erast Benson wrote:
> > >> But upcoming BrandZ[1] (Solaris 11 zones) will have additional syscall
> > >> layer which will allow to run OpenSolaris-based distribution like
> > >> NexentaOS[2] without *any* performance loss
> > >
> > > That's exceedingly unlikely. Every layer of abstraction that moves you
> > > away from bare metal necessarily introduces some performance degradation.
> >
> > Please read what BrandZ is. There is no HW abstraction introduced. It only
> > introduces tiny software layer of syscall's abstraction. Look at  "3.4.
>
> And this tiny software layer manages to do it's work in zero time?  Amazing.
> They should use this marvellous technology for the rest of the OS, and then
> it can do all possible work in zero time.
>
> Or maybe there *is* a performance loss after all.
>
> > >> and Linux-based distributions
> > >> with minimal performance loss (5-10%), which is way more efficient than
> > >> Xen/VMware/etc..
> > >
> > > Please read up on Xen's performance before making factually incorrect
> > > claims.
> >
> > Nope. Xen technology badly loosing performance game to Zones, especially
> > when you start running 10-20 nodes.
>
> Show us the numbers.
>
> > Zones are native. You could think of Zone as of chroot environment with
> > networking interface.
>
> So like Linux vservers then, just without the process segregation and
> CPU/memory limits?
>
> - Matt
>
> --
> I'm personally quite happy with one stable release every two years, and am
> of the opinion that trying to release more will mean we'll have to rename
> the distro from "stable" to "wobbly". -- Scott Remnant on debian-devel
>
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