Linux's Early Boot-Time Physical Memory Allocator Sees Big Speed-Up: ~268s To ~50ms

Posted by bob on Oct 24, 2026 12:49 PM EDT
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Sent out today for the Linux 7.4 kernel were a set of memblock improvements. Most notable is a performance optimization within mm/memblock.c that implements the kernel's early boot-time physical memory allocator that is used prior to the bring-up of the full page allocator...

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