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    SubjectRe: 2.2.12: serial driver swapping characters?
    Date
    On Thu, 9 Sep 1999 08:20:48 +0200, "Ulrich Windl"
    <ulrich.windl@rz.uni-regensburg.de> wrote:

    >On 8 Sep 99, at 13:47, Kris Karas wrote:
    >

    >> I just saw the first instance of what might be serial corruption last night
    >> running 2.3.16. The kernel dumped "VJ Decompression Error" onto my console
    >> while I was using PPP over an error-correcting modem link. I have no idea if
    >> this was due to the serial stream or something in the TCP layer; but if the
    >> former, and the serial code from 2.3 was back-ported to 2.2, then perhaps the
    >> errors are related.
    >
    >Let me throw in that the problem did not occur on a faster machine,
    >so there might be some race conditions. Slow hardware can't explain
    >swapped chracters or duplicated ones IMHO.
    >
    >Anyone with a real slow machine out there?
    >

    I have a PS/2 486SLC which is a 17 bogomip machine. I am having a lot
    of problems with PPP throughput since moving up from 2.2.10 to 2.2.12.
    At times I see up to 50% incoming PPP frame errors over a V90 modem
    link.

    I don't know if this is relevant.




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