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Linux 6.15 Further Improves AMD P-State Driver, Intel Dev Tackles A ~50% SPEC Regression
Linux power management and ACPI subsystems maintainer Rafael Wysocki last week sent out the assortment of ACPI/PM material for the new Linux 6.15 kernel cycle
The AMD P-State driver continues seeing a variety of optimizations so it functions more efficiently and ultimately more well-runded. There is work in Linux 6.15 to avoid carrying out the same writes multiple times and needlessly caching some variables. Intel engineer Rafael Wysocki who pursued the menu governor improvements had commented with the patch series on the motivation and impact:"This work had been triggered by a report that commit 0611a640e60a ("eventpoll: prefer kfree_rcu() in __ep_remove()") had caused the critical-jOPS metric of the SPECjbb 2015 benchmark to drop by around 50% even though it generally reduced kernel overhead.
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