lkml.org 
[lkml]   [2001]   [Jan]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: PROBLEM: select() on TCP socket sleeps for 1 tick even if data available
    Michael Lindner wrote:
    >[...]
    > send(s, ".", 1, 0);
    >[...]
    > while (select(r+1, &readfds, 0, 0, 0) > 0) {
    >[...]
    >[select returns only after about 1 HZ]

    Ever heard of nagle? (If not, there's a long thread about
    it on the mailing list *g*)

    It's not the select that waits. It's a delay in the tcp send
    path waiting for more data. Try disabling it:

    int f=1;
    setsockopt(s, SOL_TCP, TCP_NODELAY, &f, sizeof(f));

    Ciao, ET.

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:04    [W:4.281 / U:0.676 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site