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    SubjectRe: Tuning Linux for high-speed disk subsystems
    On Tue, Nov 13, 2001 at 03:29:13PM +0100, Roy Sigurd Karlsbakk wrote:
    > After some testing at Compaq's lab in Oslo, I've come to the conclusion
    > that Linux cannot scale higher than about 30-40MB/sec in or out of a
    > hardware or software RAID-0 set with several stripe/chunk sizes tried out.

    Eh, we do 60-70 MB/s reads and 110-120 MB/s writes on our RAIDs... from
    linux.


    > Does anyone know this stuff good enough to help me how to tune the system?
    > PS: The CPUs were almost idle during the test. Tested file system was
    > ext2.

    I'd say you should get rid of your compaq raid controller and use a
    regular SCSI-controller - 66Mhz 64 bit. (e.g. an adaptec)



    --
    Ragnar Kjørstad
    Big Storage
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