Intel Working On Improving Linux Virtualization With VT-d Scalable Mode
Written by Michael Larabel in Virtualization on 27 September 2018 at 05:10 AM EDT. 4 Comments
VIRTUALIZATION --
Intel VT-d revision 3.0 adds a "Scalable Mode" translation mode for enabling Scalable I/O virtualization and the patches have been in the works for supporting this within the Linux kernel.

Intel open-source developer Ashok Raj has written a detailed block post covering this Intel virtualization enhancement for directed I/O and its benefit on performance and overcoming existing I/O virtualization shortcomings.

As implied by the name, this new mode should be much more scalable compared to be PCIe SR-IOV. The post can be read at 01.org for those interested in I/O virtualization performance.

Also on the virtualization front but pertaining to Intel GVT-g graphics, there is an RFC patch series with a set of ten patches implementing pvMMIO for improving the graphics performance by about 4% on average for media and 3D benchmarks. Other optimizations are also still possible for tuning more performance out of GVT-g.

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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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