Language Selection

English French German Italian Portuguese Spanish

Improving KVM Performance With A Tickless Kernel

Filed under
Linux

Avi Kivity suggested that combining KVM, the Kernel-based Virtual Machine, with the dyntick patch could improve overall KVM performance. He noted that it would likely improve performance of both the host by "avoiding expensive vmexits due to useless timer interrupts," as well as on the guest by "reducing the load on the host when the guest is idling (currently an idle guest consumes a few percent cpu)".

Ingo Molnar pointed out that KVM with his -rt kernel already works with dynticks enabled on both the host and the guest, "using the dynticks code from the -rt kernel makes the overhead of an idle guest go down by a factor of 10-15". Ingo added that he hopes the dyntick patch will be ready to be merged into the upcoming mainline 2.6.21 kernel.

Rik van Reil noted that there were other ways to reduce the load of the guest when it's idling,

Full Story.

More in Tux Machines

Relax, it's just Ubuntu 15.04. AARGH! IT'S FULL OF SYSTEMD!!!

Most users will notice very little overall difference in this latest Ubuntu release, but it’s this change that packs the biggest punch. There are a couple of new things that make 15.04 worth the upgrade from previous versions, but the really big changes – like the move to Unity 8 and the whole "convergence" of the desktop and mobile versions – remain in the future. Read more More:

Ubuntu Is Slowly Moving Towards the Rolling Release Model

Developers from Canonical explained last week that they intended to rebase the Ubuntu Next flavor (featuring Mir and Unity8) on Snappy, which means that they were also considering moving to a rolling release model, even if it was just for this branch. Read more

Next Ubuntu Codename Announced, New Laptops

Ubuntu dominated the headlines today with its Ubuntu Online Summit for 2015 beginning today. Mark Shuttleworth gave the keynote and informed a loyal public of the new 15.10 lsb_release -a. Elsewhere, Ubuntu 15.04 gets a thumbs-up and Ebuyer.com is now selling Ubuntu laptops. Read more

Netflix FIDO