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⇱ Revisiting The Linux 6.19 Performance With "NEXT_BUDDY" Now Disabled Review - Phoronix


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Revisiting The Linux 6.19 Performance With "NEXT_BUDDY" Now Disabled

Written by Michael Larabel in Software on 26 January 2026 at 10:24 AM EST. Page 5 of 5. 2 Comments.

RocksDB remained slightly faster on Linux 6.19.

The Nginx HTTPS web server static file serving benchmark showed a slight improvement with NEXT_BUDDY disabled.

The Apache HTTPD web server showed a more pronounced improvement from disabling NEXT_BUDDY on this AMD Threadripper workstation.

CPU-based AI inferencing with Llama.cpp also showed some improvements out of the kernel with NEXT_BUDDY disabled but for some of these benchmarks the performance remained lower than using Linux 6.18 LTS on this AMD Ryzen Threadripper Zen 5 system.

Linux 6.19 now with NEXT_BUDDY disabled did resolve some of the performance regressions seen earlier in the cycle. NEXT_BUDDY disabled on Linux 6.19 did also deliver some performance gains not otherwise seen to this point in my testing. But there were still some cases of Linux 6.19 Git performing worse than Linux 6.18 stable. Overall though Linux 6.19 with NEXT_BUDDY disabled seems like the right decision at this point and we'll see how it's looking if/when NEXT_BUDDY is reworked further.

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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 20,000 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, LinkedIn, or contacted via MichaelLarabel.com.