[Verse 1]
Deep within the kernel's core, memory fragments scatter wide
Pages broken into pieces, efficiency has died
SLAB allocator emerges, with its caches primed to serve
Objects grouped by size and type, performance curves preserved
[Chorus]
Buddy splits and buddy merges, powers of two align
SLAB and SLUB cache objects, keeping allocation fine
Free lists hold the fragments, coalescing when they meet
Memory allocators dancing to the kernel's steady beat
[Verse 2]
SLUB came later, sleeker still, fewer locks to slow us down
Per-CPU freelists spinning, fastest allocator in town
While buddy system handles pages, binary tree so neat
Order zero up to ten, makes fragmentation sweet
[Chorus]
Buddy splits and buddy merges, powers of two align
SLAB and SLUB cache objects, keeping allocation fine
Free lists hold the fragments, coalescing when they meet
Memory allocators dancing to the kernel's steady beat
[Bridge]
Kmalloc wraps the complexity, GFP flags decide the fate
Atomic allocations never sleep, process context waits
Slabs hold constructor magic, objects born initialized
While buddy guards the bigger blocks, perfectly organized
[Verse 3]
Color offset spreads the load across cache lines divine
False sharing gets eliminated, performance stars align
When objects die, they don't disappear, back to freelists go
Ready for the next request, efficient ebb and flow
[Chorus]
Buddy splits and buddy merges, powers of two align
SLAB and SLUB cache objects, keeping allocation fine
Free lists hold the fragments, coalescing when they meet
Memory allocators dancing to the kernel's steady beat
[Outro]
Three allocators working close, each with its domain
Kernel memory stays efficient, through sun and digital rain