Re: sendfile(2) SF_NOPUSH flag proposal

From: Igor Sysoev (is_at_rambler-co.ru)
Date: 05/27/03

  • Next message: Igor Sysoev: "Re: sendfile(2) SF_NOPUSH flag proposal" 
    Date: Tue, 27 May 2003 22:38:55 +0400 (MSD)
To: Terry Lambert <tlambert2@mindspring.com>

    On Tue, 27 May 2003, Terry Lambert wrote:

    > Why? Why not just fix the broken sendfile(2) implementation,
    > instead?

    Well, how ?

    > So there's no barrier to you fixing this by either breaking
    > up tcp_output() into two functions, or lazy-calling tcp_output(),
    > instead of aggreesively calling it between headers and file
    > data and file data and trailers in sendfile(2). Right? No
    > API change necessary?

    Did you look inside sendfile() implementation ?
    There'are no tcp_output() calls at all. Header and trailer are written by
    writev() and file pages are written by so->so_proto->pr_usrreqs->pru_send().

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

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