PVHVM Xen Is Smacking Xen PV's Performance
Written by Michael Larabel in Virtualization on 12 November 2013 at 10:55 AM EST. Add A Comment
Debian with its current kernel now provides support for Xen PVHVM guests "out of the box" and this can mean an easy performance win over a classic Xen PV (para-virtualized) setup.

The folks behind the Xen Orchestra project have run some interesting benchmarks comparing a classic Xen PV configuration against Xen PVHVM (Hardware Assisted Virtualization with specialized drivers) on Debian Linux. With Debian 7, PVHVM is supported "out of the box" by its kernel.

The Xen Orchestra crew found PVHVM Debian Xen guests to be faster than Xen's classic para-virtualization and "you can get more performance for your current Xen infrastructure for a small cost." Those interested in seeing the full benchmarks can find the details on the Xen Orchestra blog. Their testing was driven in part by the Phoronix Test Suite so you can also find more of their Xen performance data on OpenBenchmarking.org. Their tests were in turn inspired by Rackspace benchmarks, which are also wanting a full run of the Phoronix Test Suite to show off to their customers.
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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 10,000 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 or contacted via MichaelLarabel.com.

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