Optimizing Sysfs and Procfs Memory Usage

Explore optimization techniques for sysfs and procfs file systems in this Linux Plumbers Conference talk. Dive into the challenges of on-demand file systems, which maintain metadata and create inodes/dentries upon access, leading to increased memory usage during system boot. Learn about a proposed solution to delete corresponding inodes/dentries after file access completion using the DCACHE_DONTCACHE flag. Discover how this approach can reduce memory requirements, benefiting low-memory systems and virtualized environments. Examine the impact on boot time and the modified strategy of removing only file inodes/dentries to balance memory conservation and performance. Gain insights into improving memory footprint and system efficiency in Linux environments.

Optimizing sysfs and procfs - Ajay Kaher, Vamsi Krishna Brahmajosyula