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    SubjectRe: [2.6] system is very slow during disk access
    Michael Buesch <fsdeveloper@yahoo.de> wrote:
    >
    > But I've captured a few other interesting things in the syslog.
    > After doing a
    > $ hdparm -c1 -u1 -d1 -X69 /dev/hda
    > I saw this in my syslog:
    >
    > Aug 7 00:32:05 lfs kernel: blk: queue c049195c, I/O limit 4095Mb (mask 0xffffffff)
    > Aug 7 00:32:05 lfs kernel: hda: Speed warnings UDMA 3/4/5 is not functional.
    >
    > The onboard IDE controller is a UDMA-100 controller
    > and the disks do run in this mode, too.

    and

    > 149 ide_outbsync 11,4615

    it does seem that ide has gone bad. Perhaps you can run `hdaprm -X udma2'
    or whatever the `-X' argument is to force it into UDMA2 mode.

    But the driver should have done that for itself.
    -
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