On Thursday 20 September 2007, Alexey Eremenko wrote: > On 9/20/07, Pablo Sanchez <[EMAIL PROTECTED]> wrote: > > > > If so, try booting your host kernel with the nohz=off option. > > > > > > I'll try the above. > > > > Just to follow up, passing the above kernel parameter solved the > > problem. I read up a bit on CONFIG_NO_HZ=y and this is a good thing > > to save power. If I get a chance, I may try the latest svn snap .. > > It's not just about power -- NOHZ (also called tickless kernels) can > make Virtualization faster. All types of Virtualization - because > there will be less overhead. > > But this all is just in theory.
Indeed, using a tickless Linux kernel as _guest_ induces less overhead since there are less world switches between the host and the guest. But I'm talking about nohz=off for the _host_ Linux kernel! Kind regards, Frank -- Dr.-Ing. Frank Mehnert innotek GmbH, http://www.innotek.de
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