Xen Linux Guests Could Be Faster With Linux 4.13

Written by Michael Larabel in Virtualization on 6 July 2017 at 06:05 AM EDT. 9 Comments
The Xen feature updates have been submitted for the Linux 4.13 kernel merge window.

New for Xen virtualization in Linux 4.13 is support for greater than 32 virtual CPUs at domain restore as well as some new sysfs nodes are exposed related to Xen. Exciting us the most is also "some performance tuning" around running Linux as a Xen guest.

The new sysfs nodes will expose the hypervisor build ID and guest type.

The list of changes for Xen in Linux 4.13 can be found via this pull request. A few Phoronix readers have recently expressed interest in some fresh KVM/Xen/VirtualBox Linux virtualization benchmarks and I'll likely be getting to that once Fedora 26 has been released.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.

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