Re: How to change irq on dell inspiron 8500 ?

From: Dances With Crows (danSPANceswitTRAPhcrows_at_gmail.com)
Date: 06/23/05

  • Next message: Alessandro Boggiano: "Re: How to change irq on dell inspiron 8500 ?" 
    Date: Thu, 23 Jun 2005 08:15:15 -0500

    On Thu, 23 Jun 2005 02:47:08 GMT, Alessandro Boggiano staggered into the
    Black Sun and said:
    > I'm using FC2 on a dell inpiron 8500 P4/2Ghz/1Gb. My problem is that
    > the USB device, eth0 and Nvidia card share the same irq 11.

    A lot of laptops are built so that multiple devices share one hardware
    IRQ. This saves the manufacturer money, so it must be good. FWIW, the
    sound card, Rage128, and PCMCIA controller share one IRQ on my Thinkpad,
    which has half the CPU and 1/3 the RAM that your machine does, and
    everything works fine.

    > My system is *VERY* slow when I have a lot of graphic output in a
    > terminal (I'm using gnome-terminal)

    I've recently heard reports of gnome-terminal being really slow in other
    newsfroups. This is probably nothing to do with the IRQ, but with the
    particular version of gnome-terminal and its supporting libraries. I've
    never seen the problem firsthand, because I use KDE, and I don't
    remember the proposed solution, but groups.google probably remembers it.

    > meanwhile I transfering a lot of MB on the lan. I'm using the nvidia
    > close source driver (but same thing with the nv driver), and IMHO the
    > prblem is that where is too much "traffic" on the irq 11.

    The nv X module doesn't use the vblank interrupt (which only fires about
    60 times a second on an LCD anyway) IIRC, so switching to nv should've
    reduced the problem if it were related to IRQs.

    > How can I force the kernel to use IRQs in a better way?

    I really don't think that's the problem. Go groups.google
    gnome-terminal, G-Dawg, and see what they say. Or start using KDE :-) .
    HTH, 

    -- 
Matt G|There is no Darkness in Eternity/But only Light too dim for us to see
Brainbench MVP for Linux Admin /    mail: TRAP + SPAN don't belong
http://www.brainbench.com     /                Hire me! 
-----------------------------/ http://crow202.dyndns.org/~mhgraham/resume
  • Next message: Alessandro Boggiano: "Re: How to change irq on dell inspiron 8500 ?"

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