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    SubjectRe: Overcomittable memory
    On Mon, 20 Mar 2000, James Sutherland wrote:
    >On Mon, 20 Mar 2000 19:04:06 +0000, you wrote:

    [Lots of sensible stuff deleted]

    >>It's the ability to request non-overcommit that's essential, and I don't
    >>see what you have against it. With the current scheme of things this is
    >>impossible.
    >
    >No it isn't. Just touch the memory on allocation.
    [...]
    >If you want non-overcommitted memory, just touch it on allocation.
    >That's it. No need to mangle the kernel or anything else.

    As I have repeatedly stated, this does NOT prevent overcommit. You still
    have stack growth, kernel modules, other process heaps, etc. to deal with.

    Currently there is no way to disable overcommit in Linux.

    Dave

    David Whysong dwhysong@physics.ucsb.edu
    Astrophysics graduate student University of California, Santa Barbara
    My public PGP keys are on my web page - http://www.physics.ucsb.edu/~dwhysong
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