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Balance NUMA Merged For Linux 3.8 Kernel

Linux Kernel

Published on 18 December 2012 01:19 AM EST
Written by Michael Larabel in Linux Kernel
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The Balance NUMA branch of the Linux kernel has been merged for the current 3.8 development cycle.

For those unfamiliar with the Balance NUMA work, see the Linux NUMA performance comparison from earlier this month.

The Git merge message mentions for "balancenuma-v11" that the NUMA results with this work may be mixed. "The results are a mixed bag. In my own tests, balancenuma does reasonably well. It's dumb as rocks and does not regress against mainline. On the other hand, Ingo's tests shows that balancenuma is incapable of converging for this workloads driven by perf which is bad but is potentially explained by the lack of scheduler smarts. Thomas' results show balancenuma improves on mainline but falls far short of numacore or autonuma. Srikar's results indicate we all suffer on a large machine with imbalanced node sizes."

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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