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    SubjectRe: [PATCH] tcp: Implement a two-level initial RTO as per draft RFC 2988bis-02.
    On Thu, May 19, 2011 at 9:55 AM, Alexander Zimmermann
    <alexander.zimmermann@comsys.rwth-aachen.de> wrote:
    > Exactly. This is the point. It's *your* environment. However, TCP is
    > general purpose. And for the wider internet 1s is know to be save. See the
    > measurements in the draft that Mark Allman run.

    That's right, there's no one-size-fits-all solution. That's why I'm
    in favor of keeping a reasonably conservative default (say 1s to 3s,
    so we don't break the Internets) and giving people a knob to adjust it
    to whatever makes sense for them.

    Looking through the kernel, I see that SCTP already has knobs for
    this: sctp_rto_initial, sctp_rto_min, sctp_rto_max. You can even
    control the constants used to update rttvar and srtt: sctp_rto_alpha,
    sctp_rto_beta

    --
    Benoit "tsuna" Sigoure
    Software Engineer @ www.StumbleUpon.com


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