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    SubjectRe: VM balancing problems under 2.4.2-ac1
    On Sat, Mar 03, 2001 at 01:03:26AM +0100, Adrian Bunk wrote:
    > > If anybody as a good idea to make this code auto-balancing,
    > > please let me know.
    >
    > I have no idea for auto-balancing but another idea: It's one possibility
    > to let the user choose when doing "make *config" what he wants:
    >
    > - A VM optimized for servers that swaps out applications in favor of
    > caching.
    > or
    > - A VM optimized for workstations that won't swap out applications in
    > favor of caching.

    I thought about the same thing sometimes (but for other troughput
    vs. latency decisions, too).

    But I realized, that my very own workstation is also a server,
    since it runs an httpd, mysqld, smbd, ftpd etc.

    And somtimes the servers become very busy in our LAN[1].

    IF we want that tuning, we should have it as a sysctl. Most of it
    is already possible with /proc/sys/vm/*, but balancing decisions
    are still missing.

    And even for servers we need to reduce caching sometimes. Think
    of an httpd serving _very_ dynamic content. Or any other
    application (e.g. DMBS), that doesn't rely on file system
    caching.

    A anonymous/file-backed[2] ratio would be VERY handy ;-)

    But maybe this will be implemented one day along the lines of QoS
    in the VM...

    Regards

    Ingo Oeser

    [1] >1500 possible clients for these servers.
    [2] Not counting swaps as file backed. We have a special inode
    for the swapper anyway, right?
    --
    10.+11.03.2001 - 3. Chemnitzer LinuxTag <http://www.tu-chemnitz.de/linux/tag>
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