[Fedora-xen] Xen/Linux 3.4.2 performance

[Pasi Kärkkäinen]

On Mon, Jul 02, 2012 at 04:50:42PM -0500, W. Michael Petullo wrote:
> We have seen a significant reduction in performance in our research DomU
> OS kernel when running on Fedora 16 with Linux 3.4.2 vs. 3.3.7. We run
> a series of benchmarks which are DomU-kernel-space-CPU-heavy; many of
> these run 10x slower when using the 3.4.2 Linux kernel as Dom0.
> 
> This is a little surprising---we've been tracking the Fedora kernels for
> a long time with no problem like this. Did anyone else notice any changes?
> 

Just to verify.. both the 3.3.7 and 3.4.2 Linux kernel are 'release' builds? 
and not debug-versions from rawhide? 

-- Pasi