Perf Support For 2,048 CPU Cores Is Becoming Not Enough - Patches Bump Kernel Limit

Posted by bob on Dec 11, 2024 11:22 AM EDT
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Currently the Linux kernel's "perf" performance monitoring subsystem has a limit on 2,048 CPU cores for its CPU map that is set by the MAX_NR_CPUS value. But that's becoming not enough in today's high core count era that patches are looking to raise it to a 4,096 CPU core limit by default...

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