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Yes, you can have too many CPU cores - Ampere's 192-core chips break ARM64 Linux kernel in two-socket systems, company requests higher core count support | Tom's Hardware

Yes, you can have too many CPU cores - Ampere's 192-core chips break ARM64 Linux kernel in two-socket systems, company requests higher core count support

https://www.tomshardware.com/pc-components/cpus/yes-you-can-have-too-many-cores-amperes-192-core-cpus-break-arm64-linux-kernel-in-two-socket-systems-company-requests-higher-core-count-support-for-mainline-linux

Core counts for ARM-based server CPUs are overwhelming Linux operating systems.

Yes, you can have too many CPU cores - Ampere's 192-core chips break ARM64 Linux kernel in two-socket systems, company requests higher core count support

Oops all cores

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yote_zip

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I bet someone at some point said "256 is futureproof". We're well into Amdahl's Law at this point.

infeeeee

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From the article:

Back in 2021, a patch was sent out proposing the ARM64 CPU core limit be increased to 512, but Linux maintainers denied it because no CPU hardware was available at the time with more than 256 cores.