git: kernel - Implement degenerate timeout case for select() and poll()

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxxxxx>]

commit 4979e190653603f0f22dab90b92a4fab2a6fc5a9
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date:   Sat Nov 12 11:26:43 2011 -0800

    kernel - Implement degenerate timeout case for select() and poll()
    
    * When select() or poll() are called with no descriptors and only a
      timeout, call nanosleep1() instead of using tsleep() to generate
      a more precise time delay.
    
    * Significantly improves postgresql's performance.

Summary of changes:
 sys/kern/sys_generic.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/4979e190653603f0f22dab90b92a4fab2a6fc5a9


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