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The Surprising Spectre BHI Mitigation Performance Impact On Meteor Lake

When recently carrying out performance benchmarks of Intel Meteor Lake performance on Linux since launch day two years ago, the geo mean came in at 93% the original performance. Finding the performance trending clearly lower with an up-to-date Linux software stack compared to in December 2023 was quite surprising considering the rather nice gains we have seen over time on other Intel/AMD hardware. As noted in that article though, one of the possible explanations there is the Spectre BHI "Branch History Injection" vulnerability and microcode plus Linux kernel mitigations having come out post-launch and affecting Meteor Lake CPUs. Sure enough, follow-up tests looking at the Spectre BHI impact have revealed a measurable cost in a number of workloads for the Core Ultra processor.

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LLMinus Working On AI/LLM-Powered Merge Conflict Resolution For The Linux Kernel

Building off an initial request for comments (RFC) patch series posted during the winter holidays, an updated RFC patch series was posted this weekend for LLMinus. LLMinus is an effort led by NVIDIA Linux kernel engineer Sasha Levin to provide a large language model (LLM) assisted merge conflict resolution tool focused on Linux kernel development...

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Auto-CPUFreq 3.0 Released To Help You Extend Laptop Battery Life On Linux

Auto-CPUFreq 3.0 released this weekend as the newest version of this Linux user-space tool to help you extend your laptop battery life by automatically applying CPU speed and power optimizations. When all goes according to plan, Auto-CPUFreq means extending your battery life without compromises to the user experience...

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Linux Consulting Firm Linutronix Recently Began A New Chapter

Some news that slipped under the radar prior to the holidays... Linutronix as the Linux consulting firm that has led the real-time "PREEMPT_RT" work and more within the Linux kernel -- and Linutronix was acquired by Intel back in 2022 as an independent subsidiary -- is beginning a "new chapter"...