Stan Hoeppner:
> On 12/1/2012 2:26 PM, Wietse Venema wrote:
> > Stan Hoeppner:
> >> ...and I have no experience and pay no
> >> attention to what Oracle is doing with Solaris virtualization,
> >> "containers" I believe they call it.
> >
> > Solaris containers are descendants from FreeBSD jails: they provide
> > different userland namespaces(*) on top of a shared OS kernel.
> >
> > Hardware virtualization on the other hand provides different hardware
> > namespaces(*) on top of a shared hypervisor.
> >
> > These are basically sandboxing methods with different levels of
> > isolation and performance. I would not expect that jails/containers
> > introduce new challenges with respect to missing interrupts.
> >
> > Wietse
> >
> > (*) Not just file or device names, but also
> > memory addresses, disk blocks, and so on.
>
> Wietse you work in a "small corner" of IBM and may not know, but if you
> do or know who to ask, I'd like to know how IBM handles Linux guest
> clocks on zSeries, and pSeries for that matter. Is there an IBM
> document on this maybe?
I don't know the fine details, but I do know that these systems
have have very mature hardware support for virtualization and
multiprocessing.
There are many IBM documents, too many for me to make a quick
selection for you.
Wietse
