Allocators for Compressed Pages - In-depth Comparison with z3fold

Explore an in-depth comparison of allocators for compressed pages, with a focus on z3fold, in this 42-minute conference talk by Vitaly Wool, a consultant for the Linux Foundation. Dive into the intricacies of three allocators (zbud, zsmalloc, z3fold) and their two main users (zswap, zram), examining performance metrics, compression ratios, and implementation restrictions. Learn about ongoing z3fold streamlining efforts, including the evaluation of lock-less lists, expanded use of atomic operations, bit read-write locks, and support for movable z3fold pages. Gain insights from Vitaly Wool's extensive experience in embedded Linux projects and power consumption optimization across various platforms and architectures.

Introduction
Swapping
Cache
Pages
Data Blocks
Illusions
Compression Ratio
Compressed Alligators
Zebra
SEM 2016
z3fold
Updateability metrics
Random readwrite
Profiling
Results
Internal fragmentation
Spinlock
Graph
Syncopation
Per CPU
Conclusions
Questions