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    SubjectRe: Skyhigh retransmit times. Yearold problem still in 2.3.26
    Andi Kleen wrote:

    > (Christoph Lameter) writes:
    > > I have been bitching about this for years ....
    > >
    > > This is for a ssh connection via a ricochet:
    > >
    > > netstat -ton
    > >
    > > tcp 0 0 ESTABLISHED off (0.00/0/0)
    > > tcp 0 0 ESTABLISHED on2 (7106.08/0/0)
    > > tcp 0 0 ESTABLISHED on2 (6455.34/0/0)
    > >
    > > If there would at least be a command to reset those times to make the
    > > connection usable again.... This way I have to establish a new connection
    > > to the same host to do something usable.
    > Once you get through again TCP will reset the timeouts itself as it
    > receives new ACKs.

    Whilst this is true, I think many people would describe a protocol that allows 2 hour retransmits
    as broken. Were its designers looking for reasonable results on links between the Earth and Mars?

    This is quite a pain with TCP across unreliable media (e.g. the Internet). A broken path gets
    fixed after some significant downtime, but established connections take an age to pick up again.
    There has be a Better Way.


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