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Organization: Concept Micro
From: Pierre Etchemaite <petchema@concept-micro.com>
To: Andrew Morton <andrewm@uow.edu.au>
Subject: Re: lowlatency 2.2.19
Cc: linux-kernel@vger.kernel.org, Andrea Arcangeli <andrea@suse.de>,
        William Montgomery <william@opinicus.com>,
        safemode <safemode@voicenet.com>
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Le 05-Jun-2001, Andrew Morton écrivait :
> Some video cards have a PCI cheat-mode in which they keep
> the PCI bus busy until they are ready to accept new
> commands, rather forcing a retry.  Figures of up to
> twenty milliseconds have been mentioned.  Your X server
> *may* support the `PCIRetry' config option which will
> defeat this.

Just FYI (I think it's S3 Virge specific, but maybe not), I solved my RX
packets loss on my ADSL interface after I read the message

        http://www.xfree86.org/pipermail/xpert/2000-November/003402.html

and used

Section "Device"
        Identifier      "Generic Video Card"
        Driver          "s3virge"
        Option "fpm_vram"
        Option "fifo_aggressive"
        Option "pci_burst" "on"
        Option "pci_retry" "on"
        Option "XaaNoCPUToScreenColorExpandFill"
EndSection

in my XFConfig-4.

(The whole thread seems to be worth a read.)

Best regards,
Pierre.


-- 
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