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    Subjectreal kernel bloat
    Steve VanDevender writes:
    > I recently got a DEC AlphaStation at my new job. It's running Digital
    > UNIX, since that's what the other machines I am charged with maintaining
    > run.
    > As far as I can tell Digital UNIX (formerly Digital OSF/1) is a fat
    > bloated pig. At boot the kernel allocates over 8 megabytes of memory to
    > itself on a 32 meg machine. Once I load up X and my assortment of
    > desktop doodads the machine runs acceptably, as long as only one thing
    > is running. If, however, I try to compile something and then do
    > something else the machine swaps like mad, and simple window system
    > operations like raising or moving windows have 5-10 second delays
    > between pressing the buttons and seeing something happen.
    > I compare this with my home Linux system, with 486-DX2/66 instead of a
    > 233 MHz Alpha, but also with 32M of memory. Even though I've got enough
    > going to have pushed this machine a little ways into swap, it never
    > feels as loaded as the Digital UNIX box. And the kernel takes no more
    > than 1.5M of memory once loaded. Despite the AlphaStation having a
    > processor that's at least 5 times faster and having PCI instead of ISA
    > for its peripherals, Digital UNIX manages to make it suck for
    > interactive performance.
    > So those of you complaining about Linux's kernel bloat haven't seen
    > anything if you haven't seen Digital UNIX. Linux has a long, long way
    > to go before it could aspire to be that bloated.
    Your AlphaStation is badly misconfigured.

    Alex Krimkevich

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