this post was submitted on 12 Jun 2024
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Covered last week on Phoronix was a new patch from Intel that with tuning to the P-State CPU frequency scaling driver was showing big wins for Intel Core Ultra "Meteor Lake" performance and power efficiency. I was curious with the Intel claims posted for a couple benchmarks and thus over the weekend set out to run many Intel Meteor Lake benchmarks on this one-line kernel patch... The results are great for boosting the Linux performance of Intel Core ultra laptops with as much as 72% better performance.

The patch posted last week for the Linux kernel tunes the Intel P-State Energy Performance Preference (EPP) value for Meteor Lake in the default "balance_performance" state. Adjusting the EPP value from 115 to 64 was enough to show a 19% improvement in performance for some workloads and up to an 11% performance per Watt improvement, as shown by the patch series. A similar patch was also posted last week for using those same values with upcoming Intel Arrow Lake processors.

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