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Last Post 24 Sep 2004 04:02 AM by  miket@logicpd.com
ANSWER: NFS Hogs The System and Causes Screen Tearing
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Kenneth Lerman
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--
20 Sep 2004 11:22 AM
    Updated: 1 October 2004 --

    (Partial) Answer: Screen tearing is caused by the fact that the processor is not fast enough to support the refresh rate. Reducing the refresh rate to 40 Hz solves the problem -- at the cost of some flicker. 50 Hz did NOT solve the problem. I'll try 45 Hz when I get a chance.

    ------------------------------------
    Original post is below
    ------------------------------------

    I'm copying a largish (3.5meg) file from an NFS mounted file system to root.

    (1) It is taking forever (or maybe it has hung) -- BAD
    (2) My other shells seem hung -- WORSE
    (3) The screen (which is displaying a qpe in calibrate mode) is "tearing" -- WORST.

    Is the driver for the ethernet chip doing something nasty? After all, the processor is supposed to guarantee cycles to the display first.

    It can be tough to develop when the only way to get files onto the system is by moving CF cards.

    Thanks,

    Ken
    miket@logicpd.com
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    --
    24 Sep 2004 04:02 AM
    I suspect this is related to your other post about
    a system crash when copying large files... I'm
    pretty sure it's a (small) bug in hd.c, but I dont know
    exactly what it is.
    You are not authorized to post a reply.

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