SLUB is a memory allocator used in the Linux kernel. It is designed to efficiently manage memory in the kernel space, particularly for allocating and freeing memory for objects and data structures used by the kernel. SLUB stands for "SLAB Allocator with Unordered Lists," and it is one of several memory allocation mechanisms in the Linux kernel, the others being SLAB and SLOB. The SLUB allocator was introduced to improve performance, scalability, and memory usage compared to its predecessors.
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