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AMD users should immediately switch to the latest Linux 5.11 kernel


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The latest release of the Linux kernel features some impressive performance enhancements for AMD hardware. 

 

Released over the valentine’s day weekend, Linux kernel 5.11 fixed a major performance regression that impacted the AMD Zen architecture. Thanks to the fix, Zen-based processors such as Ryzen and EPYC have been benchmarked as being faster out of the box than on previous kernels. Also debuting in the release is support for AMD “Van Gogh” and “Dimgrey Cavefish” GPUs.

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Here is the link to the Phoronix article where the info came from. https://www.phoronix.com/scan.php?page=news_item&px=AMD-Sched-Invariance-Fix-Merged and some benchmarks: https://www.phoronix.com/scan.php?page=article&item=linux511-regress-over&num=1

 

It should be noted that many users would not have been affected by the performance regression.  I have always just used the performance governor on my AMD machines.  The schedutil governor has pretty much been a hot mess since it was added to the kernel.  The ondemand and performance governors still outperform schedutil. There are also still bugs with scedutil and Zen 3 CPUs that probably won't land in the kernel for a few more weeks.  

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