Project Description
zswap [1] is a linux kernel component that provides in-memory compression for swap pages. It already provides a limited form of deduplication: if a page is filled with the same value (e.g. all-zeroes) then only that value is kept instead of compressing the contents.
This project proposes to enhance zswap with a more general and powerful dedup capability: pages that contain the same content (as identified by a checksum or hash value across the entire page contents) will be stored only once in the compressed pool.
This would be somewhat similar in spirit to what ksm [2] does, that is consolidation of identical pages of anonymous memory. There are some differences though, primarily ksm requires userspace to explicitly opt-in (via madvise/MADV_MERGEABLE) and operates on active pages that have not been selected for eviction from memory. On the other hand zswap operates transparently from the applications (it applies to all pages of anonymous memory that are on their way to swap).
Goal for this Hackweek
Have a first working POC.
Resources
Looking for hackers with the skills:
This project is part of:
Hack Week 21
Activity
Comments
Be the first to comment!
Similar Projects
Create a DRM driver for VGA video cards by tdz
Yes, those [VGA video cards](https://en.wikiped...
How software creation process can save energy and CO2 emissions by acervesato
[comment]: # (Please use the project descriptio...
Linux on Cavium CN23XX cards by tsbogend
Before Cavium switched to ARM64 CPUs they devel...
Improve Qualcomm SOC msm8994/msm8992 kernel mainline support by pvorel
Project Description
Due previous hackweek...
Modular kernel packaging by mwilck
Project Description
Create a PoC for a mo...