RTAI, IRQ and harddrive
mantegazza at aero.polimi.it
Thu Sep 9 18:15:33 CEST 2004
Pierre Pomiers wrote:
> Gilles Chanteperdrix wrote:
>> From your setup, your hard disk drive seems to be using some kind of
>> DMA, what happens if you use a PIO mode ?
> How can I do that, from the boot option ? or with hdparm ?
>> One more question: did you try disabling APM, ACPI, USB, etc...
> APM and ACPI are disabled (as I already experienced strange thing with
> them)... but for USB, I can't disable it as my Linux has to handle a
> digital camera in background.
That might be bad. Look at RTAI email archives, there should be a hint
to disabling USB to avoid large latencies from my department.
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