memstapler

Locks executable files into memory, preventing them from being paged out in memory pressure situations.

Comparison to other tools

	memstapler	memlockd	prelockd
Can lock all files that are mapped as executable by any process in the system	✅	🚫	✅
Can lock predefined list of files	🚫	✅	✅
Namespace-aware: easily locks files from within running lxc/docker/podman/nspawn/... containers	✅	🚫	🚫

Caveats

• This does not lock deleted files.
• Scanning intervals are not configurable.