Re: turning off TCP_NOPUSH

From: Igor Sysoev (is_at_rambler-co.ru)
Date: 05/28/03

  • Next message: Steve Francis: "Side effect of net.inet.tcp.rexmit_min?" 
    Date: Wed, 28 May 2003 22:22:14 +0400 (MSD)
To: Garrett Wollman <wollman@lcs.mit.edu>

    On Wed, 28 May 2003, Garrett Wollman wrote:

    > <<On Wed, 28 May 2003 17:05:59 +0400 (MSD), Igor Sysoev <is@rambler-co.ru> said:
    >
    > > always calls tcp_output() when TCP_NOPUSH is turned off. I think
    > > tcp_output() should be called only if data in the send buffer is less
    > > than MSS:
    >
    > I believe that this is intentional. The application had to explicitly
    > enable TCP_NOPUSH, so if the application disables it explicitly, then
    > we interpret that as meaning that the application wants to send a PSH
    > segment immediately.

    As I understand if the data in the send buffer is bigger than MSS it means
    that TCP stack has some reason not to send it and this reason is not
    TF_NOPUSH flag. Am I wrong ?

    Igor Sysoev
    http://sysoev.ru/en/

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