Re: Memory Measurements and Lots of Files and Inodes

From: David Schwartz (
Date: Fri Dec 13 2002 - 03:39:27 EST

>Can anybody provide a better metric for "ram free for userspace

        This is a constant battle for programmers trying to develop sophisticated
applications for sophisticated operating systems.

        If all of the applications are cooperating, you can do it fairly easily.
First, ask the kernel how much physical memory there is. Then fudge a
reduction based on kernel usage. Then subtract the amount of RAM each
application is 'really using' by asking it.

        If you write all the applications, this isn't hard to do. If you have to
cooperate with other applications you didn't write, things get trickier. If
you're the only application, things are really easy.

        There are any number of heuristics and guesstimates. Ultimately, I recommend
mostly leaving your memory usage user-configurable.


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