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    SubjectRe: [Fwd: [Fwd: Is sendfile all that sexy? (fwd)]]
    On Thu, Jan 18, 2001 at 02:06:46PM +0100, Ingo Molnar wrote:
    > On Wed, 17 Jan 2001, Rick Jones wrote:
    > > i'd heard interesting generalities but no specifics. for instance,
    > > when the send is small, does TCP wait exclusively for the app to
    > > flush, or is there an "if all else fails" sort of timer running?
    > yes there is a per-socket timer for this. According to RFC 1122 a TCP
    > stack 'MUST NOT' buffer app-sent TCP data indefinitely if the PSH bit
    > cannot be explicitly set by a SEND operation. Was this a trick question?
    > :-)

    Are you sure? The retransmit timer is not necessarily started and I don't
    see any other timer in 2.2 or plain 2.4 that would do that that.

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