Re: [2.6] system is very slow during disk access

From: Bartlomiej Zolnierkiewicz (B.Zolnierkiewicz@elka.pw.edu.pl)
Date: Wed Aug 06 2003 - 18:01:48 EST

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On Thu, 7 Aug 2003, Michael Buesch 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.

Please send dmesg and .config.

-- Bartlomiej

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