Re: High interrupt usage on IO

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Wed, Mar 12, 2008 at 09:39:26PM +0000, Brad Pitney wrote:
> Hi,
> 
> I am experiencing high interrupt usage on disk read/writes whether it
> is under Dom0 or DomU, which results in a rather paltry 2MB/ps writing
> when doing a say:
> $ dd if=/dev/zero of=tempimg bs=1m count=555
> for example.

I think the issue because of this:
Mar 12 03:21:05 frazzle /netbsd: pciide0 at pci0 dev 2 function 5
Mar 12 03:21:05 frazzle /netbsd: pciide0: vendor 0x1039 product 0x5513 (rev. 
0x01)
Mar 12 03:21:05 frazzle /netbsd: pciide0: bus-master DMA support present, but 
unused (no driver support)

did you remove siside from your kernel config ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--