A recent update in the Linux kernel has resulted in significant performance improvements for Intel Core Ultra “Meteor Lake” processors. Intel engineer Srinivas Pandruvada released a patch that adjusts the power performance preference (EPP) value for Meteor Lake, leading to a 19% increase in performance and an 11% improvement in performance per watt. The patch also reduces power consumption during video playback by 52%.
The revised EPP value for Meteor Lake has shown improvements across various benchmarks. Speedometer web browser benchmark saw a 19% improvement, while WebXPRT 4 browser benchmark showed a 12% increase. Additionally, 3DMark Wild Life Extreme and Geekbench multithreaded test reported improvements of 3% and 2% respectively. Performance per watt also increased by 11% in 3DMark Wild Life and 5-6% in web browser benchmarks.
The patch not only focuses on performance improvements but also adjusts the EPP value for balance_power, resulting in a 52% reduction in power consumption during video playback and a 35% decrease during Microsoft Teams video conferencing. These improvements are significant for Intel Core Ultra laptops.
The updated tuning magic for Intel Meteor Lake SoCs with the P-State driver is provided in the patch released by Pandruvada. It is hoped that these patches will be merged for Linux v6.11 or shipped early as a “fix” for the current 6.10 cycle. Additionally, a patch is being worked on to ensure that Intel Arrow Lake follows the same new EPP defaults as Meteor Lake.
Once the refined EPP patch for Meteor Lake is merged, further benchmark tests will be conducted on the Core Ultra 7 155H system to observe the impact on power and performance across a wider range of workloads. The changes brought by this patch could potentially enhance the overall user experience and efficiency of Intel Core Ultra laptops.
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https://www.phoronix.com/news/Intel-MTL-EPP-Tuning-64
