Re: Conflict between ide and usb?

[Mark Lord]

Mark Lord wrote:
> John Coppens wrote:
>
> > I installed ueagle-atm, which, by itself, is working fine with an 
> > MT-810 modem.
> >
> > The problem I have, is that when I copy a file from a DVD to harddisk,
> > the internet connection almost dies (it slows down terribly, so much so
> > that established connections actually disconnect, ping looses packets,
> > DNS lookup fails, etc). After copy ends, all returns to normal.
> >
> > The machine is an AMD64, still in x86 mode though. CPU activity is very
> > low during the copy, so it's not a CPU problem. Kernel is 2.6.20.2. APIC
> > is enabled. No error message found in either /var/log/messages or syslog.
> > DVD and HD are on different IDE interfaces.
> >
> > Can anyone suggest where to start looking for a solution?
> ..
> >  16:       2591    1737056   IO-APIC-fasteoi   libata, HDA Intel
> >  17:         41          1   IO-APIC-fasteoi   libata, ehci_hcd:usb2
> ..
>
> It pretty much has to be an IRQ sharing issue,
> most likely in the USB driver side of the house.

Oh, wait a minute.. that's not the correct IRQ, is it?

Your ueagle-atm must be on this one:

20:   90833792    3057782   IO-APIC-fasteoi   ohci_hcd:usb1

In which case, it's not likely to be an interrupt sharing issue.
Can you confirm this?

Also, try moving your ueagle-atm to one of the ehci usb ports
and see how that affects things.
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