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Phoronix Test Suite

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Oracle VirtualBox 4.2 Virtualization Benchmarks

Michael Larabel

Published on 26 August 2012
Written by Michael Larabel
Page 3 of 3 - 6 Comments

There does appear to be a serious regression somewhere when it comes to the ability of VirtualBox for building a vanilla Linux kernel. Building the vanilla Linux 3.1 kernel took significantly longer under VirtualBox 4.2 RC1 than when using the current stable release (v4.1.20).

There are some small performance improvements in some of the tests, such as Smallpt, but that test for instance still has significant overhead compared to the raw/bare-metal performance on the multi-core Intel Linux system.

If you were hoping for some performance breakthroughs with Oracle VirtualBox 4.2, it sadly doesn't look that way, at least when using an Intel Linux system and an Ubuntu 12.04 LTS guest. A few tests improved by small amounts with VirtualBox 4.2 RC1 over the 4.1.20 stable release, but there weren't any clear trends and there were also some performance regressions (namely with the build-linux-kernel test profile). More benchmarks of VirtualBox will be conducted when the 4.2 release is officially available.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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