From: "Mike Porter" <mike@UDel.Edu>
>
> If I use something like dd if=/dev/hda
> of=/dev/null, I'll get DMA timeouts within a couple of seconds.
>
An additional data point:
I use a Gigabyte BXD board with 2 CPUs, IBM DCAA-34330, IDEDMA_PCI_AUTO,
IDEDMA_PCI_EXPERIMENTAL, PIIX_TUNING.
I've never seens any DMA timeouts, but when I compiled a kernel without SMP
support [thus PIC instead of io apic], I got dma timeout after a few
minutes.
No hardware changes, so memory/disk/cables/... don't explain the timeouts.
--
Manfred
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This archive was generated by hypermail 2b29 : Thu Mar 23 2000 - 21:00:36 EST