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?

-- 
Stan

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