On Sun, Aug 11, 2013 at 9:27 PM, Richard W.M. Jones <rjo...@redhat.com> wrote:
> On Sun, Aug 11, 2013 at 09:05:08PM +0200, Geert Uytterhoeven wrote:
>> On Fri, Aug 9, 2013 at 10:43 PM, Richard W.M. Jones <rjo...@redhat.com>
>> wrote:
>> > * UML is pretty fast! It's certainly faster (by a factor of > 5) than
>> > spinning up a lightweight KVM VM.
>
>> This is interesting. Typically people say you have to use KVM or XEN
>> for good virtualization performance. But for that you need
>> sufficient privileges.
>
> I think this is true of Xen, but to be fair to KVM it doesn't require
> special privileges, with one exception. If you want KVM to use a tunX
> network interface then you have to start it as root (or use a setuid
> helper). I think this is probably true of UML too although I've not
There you name it...
> explored UML's networking yet. Basically it's a restriction in Linux
> itself.
>
>> With UML, all you need is to be able to compile and run your own
>> executables.
With UML, I can use slirp-fullbolt.
So if I want to run e.g. wireshark on the development machine at work (no root
for me), I just launch a UML with a Debian root fs that has wireshark and
run my app.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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