> Perhaps what you would want is a hybrid: let the OS page stuff out by default so you can free up the libraries and startup code and data structures etc. But i

> Perhaps what you would want is a hybrid: let the OS page stuff out by default so you can free up the libraries and startup code and data structures etc. But if your disk hits some thrashing threshold because the working sets get larger than memory, let some variant of OOM killer loose? Linux does a form of this. File mappings are paged out to disk (reclaimed) by default, and the OOM killer is only triggered if this is not enough. This gets you pretty far, as it includes all binaries and libraries.