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Linux 6.12 Perf Updates Bring Intel Lunar Lake & Arrow Lake Additions
The core perf subsystem updates have been merged for the in-development Linux 6.12 kernel
Exciting the masses -- well, those that use perf -- with Linux 6.12 is per-PMU context rescheduling that should significantly improve single-PMU performance. There is also a new RCU-protected hot path optimizations for better performance with peak throughput increasing from around 3.7M/s to 8M/s or with uretprobes going up from around 2.4M/s to 5M/s. There is also a fix for an "ancient bug" that yielded lots of perf events being dropped incorrectly when running at higher sampling frequencies.
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