Kernel VMI (Virtual Machine Interface) in F7/F8?

Dave Jones davej at redhat.com
Sun Oct 7 20:08:49 UTC 2007


On Sun, Oct 07, 2007 at 01:02:09PM -0700, Arjan van de Ven wrote:
 > On Sun, 30 Sep 2007 18:57:17 -0200
 > Thomas M Steenholdt <tmus at tmus.dk> wrote:
 > 
 > > Hi there...
 > > 
 > > It seems (noted in releasenotes) that F7 should have a VMI (Virtual 
 > > Machine Interface) enabled kernel by default, but from what I can
 > > find in the .config files it doesn't... Do I need a special kernel
 > > (i.e. only the XEN kernel has VMI or something) or was it lost in a
 > > kernel update or...?
 > > 
 > 
 > there's overhead with paravirt ops though ;)
 > at one point it was about 5% even in non-virtual environments... no
 > idea what it's at now.

According to the paravirt-ops developers, it should be negligable now,
though I admit to not having seen recent numbers on this myself.

	Dave

-- 
http://www.codemonkey.org.uk




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