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HUB - Intel Fixes E-Cores For Gaming, Doesn’t Give 12th & 13th Gen Users The Fix! APO Testing (www.youtube.com)

submitted 10 months ago by [email protected] to c/[email protected]

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[–] [email protected] 1 points 10 months ago (1 children)

which just shows the scheduler is wrong. which people who cared to put the effort in already did manually with lasso. the only missing piece is random main kernel threads jumping on to p cores. AMD scheduler isn't perfect either. And both companies are going big/little. so plenty of room to keep improving.

[–] [email protected] 1 points 10 months ago (1 children)

correction: it shows that Intel Thread Director is wrong, and that the scheduler shouldn't trust it.

[–] [email protected] 1 points 10 months ago (1 children)

Thread Director doesn't do any directing, it's a a set of new registers the OS scheduler is supposed to read for feedback on how well a thread is running on a core. If APO can do it right, it means the scheduler is wrong.

15.6 HARDWARE FEEDBACK INTERFACE AND INTEL® THREAD DIRECTOR

Intel processors that enumerate CPUID.06H.0H:EAX.HW_FEEDBACK[bit 19] as 1 support Hardware Feedback Interface (HFI). Hardware provides guidance to the Operating System (OS) scheduler to perform optimal workload scheduling through a hardware feedback interface structure in memory.

[–] [email protected] 1 points 10 months ago

facepalm are you daft?

how the scheduler gets information from ITD doesn't change what ITD does.