NUMA NUMA make Raspberry Pi go ZOOMA

Raspberry Pi 5 gets 10-15% speedup with 100 line Linux kernel patch. And what if we could save 50 megawatt-hours of power annually, just with a software patch for older Pis? I'll walk through the NUMA Emulation patch that supposedly boosts Pi 5 performance, as well as some other new performance-related developments coming down the pike! Mentioned in this video: - Pi 5 NUMA Emulation Patch: https://lore.kernel.org/lkml/20240625125803.38038-1-tursulin@igalia.com/ - What is NUMA? https://lse.sourceforge.net/numa/faq/ - x86 Fake Numa for CPUSets: https://www.kernel.org/doc/html/v5.8/x86/x86_64/fake-numa-for-cpusets.html - Pi 1, 3 A+, 3 B+ S2Idle patch: https://lore.kernel.org/dri-devel/20240630153652.318882-1-wahrenst@gmx.net/T/#ma0791259e7b745f6b97d3271dd80bee90972d6d4 - Raspberry Pi 5 A2 Command Queueing thread: https://forums.raspberrypi.com/viewtopic.php?p=2235124 - My 2019 blog post on A2 microSD cards: https://www.jeffgeerling.com/blog/2019/a2-class-microsd-cards-offer-no-better-performance-raspberry-pi - Pi 5 4GB model outperforming 8GB model: https://github.com/raspberrypi/firmware/issues/1854 - Overvolted Pi 5 from jonatron: https://jonatron.github.io/randomstuff/pivolt/ - My video on M.2 NVMe on the Pi 5: https://www.youtube.com/watch?v=GYN3ub8Qb_I Support me on Patreon: https://www.patreon.com/geerlingguy Sponsor me on GitHub: https://github.com/sponsors/geerlingguy Merch: https://www.redshirtjeff.com 2nd Channel: https://www.youtube.com/@GeerlingEngineering 3rd Channel: https://www.youtube.com/@Level2Jeff Contents: 00:00 - There's something off about Pi 5 01:27 - NUMA NUMA? 02:27 - The NUMA Emulation patch 04:29 - 50 MW of power savings (ish) 05:35 - microSD: A2 finally faster than A1 07:18 - Some Pis are slower than others 08:29 - Return of the Bloopers