[linux-audio-user] Interrupt sharing question

R Parker rtp405 at yahoo.com
Sat Mar 1 14:20:01 EST 2003


Does linux control hardware polling? If yes, then
recompile the kernel with USB as a module and don't
'modprobe usb' until it's needed. Afterwards, you can
unload USB.

I don't know the answer to my question but have
assumed this is how things work. It'd be good to have
a definitive insite. Anyone?

Warning; I've got my new hardware so ignorant
questions forthcoming. :)


--- Larry Troxler <lt at westnet.com> wrote:
> Just a quick question. After installing Redhat 8,
> I'm a bit concerned by the 
> follwing line in my /proc/interrupts:
> 10:        476          XT-PIC  usb-uhci, usb-uhci,
> EMU10K1
> Aside from the extreme nausea resulting from
> learning that my sacred MIDI port 
> is being put in the same office as the disgusting
> mundane usb port,  is this 
> a performance issue if I'm not actually using the
> usb port?
> I suspect there is a bit of a hit because the
> interrupt handler now has to 
> poll all the sources, but I maybe not - I understand
> the principles of 
> interrupt handling but not the specifics of the PCI
> bus or the linux kernel.
> So do I need to do something about this, or not?
> Larry

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