You are viewing the 2025 edition of FOSDEM. Click here to view the 2026 edition
Shrinking Memmap
UD2.208 (Decroly) | Day 2 | 11:00 - 11:30 | Speakers: Matthew Wilcox
Shrinking Memmap
Abstract
The kernel takes 1.6% of your RAM for a data structure called memmap. Much of the information in it is redundant and can be expressed more efficiently. The problem is that much of the kernel relies on the current format of memmap. Join Matthew for a high-level overview of the multi-year project to reduce the size of memmap. No prior experience of kernel programming is needed, but understanding C data structures will be an advantage.
Attachments
Speakers
Matthew Wilcox
Links
External Links
Notice: The placeholder video image is licensed under CC BY-SA 4.0. The original image can be found hereChanges made to the image are: Cropped the image to a new ratio, part of the image was cut off.
