Subj : [$] Improvements for the contiguous memory allocator
To   : All
From : LWN.net
Date : Wed Apr 16 2025 16:15:06

[$] Improvements for the contiguous memory allocator

Date:
Wed, 16 Apr 2025 15:11:35 +0000

Description:
As a system runs, its memory becomes fragmented; it does not take long
before the allocation of large, physically contiguous memory ranges becomes
difficult or impossible.  The contiguous memory
allocator (CMA) is a kernel subsystem that attempts to address this
problem, but it has never worked as well as some would like.  Two sessions
in the memory-management track at the 2025 Linux Storage, Filesystem,
Memory-Management, and BPF Summit looked at how CMA can be improved; the
first looked at providing guaranteed allocations, while the second
addressed some inefficiencies in CMA.

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Link to news story:
https://lwn.net/Articles/1016844/


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