Re: [Xen-ia64-devel] Time for hybrid virtualization?

[Tristan Gingold <tgingold@xxxxxxx>]

On Sat, Jan 26, 2008 at 05:01:26PM -0700, Alex Williamson wrote:
> Hi all,
> 
>    I got a pointer to re-aim-7 and thought the high-systime workload
> might give us a good worst case scenario.  This workload does no I/O and
> a lot of the tests produce very high system time.  Here's the results:
[...]
This makes more sense and these results are in line with Dan Magenheimer
initial results.

A factor of 4 for VTi seems to be pretty high.  IIRC privified kernels
were about two times slower than native.

I think the kernel build (or gcc) involves mostly user code - which is
effeciently virtualized!

Tristan.

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