[lkml]   [1998]   [Aug]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: Strange TCP behavior
    Bernd Paysan <> writes:

    > so it seems to be connected with an 128K limit (I tried other values, and
    > indeed, once you fill 128k with small chunks, the kernel seems urged to
    > wait).
    > Is this a bug/feature? Has anybody an idea why there is an 128k limit, and
    > why it doesn't matter once the chunk size is 1024 bytes or larger? I don't
    > think it affects real world benchmarks, but who knows.

    Seems to be a buffer management problem. When one changes the default
    buffer sizes to 128K (in /proc/sys/net/core/[rw]mem_{max,default}) then
    the degradation is at the start, not in the middle. I does not seem to
    be prune_queue() related too - prune_queue is never called.


    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 13:43    [W:0.022 / U:0.460 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site