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From: Alexander Motin <mav@FreeBSD.org>
Date: Mon, 9 May 2011 07:37:47 +0000 (UTC)
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Subject: cvs commit: src/sys/netinet tcp_subr.c
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mav         2011-05-09 07:37:47 UTC

  FreeBSD src repository

  Modified files:
    sys/netinet          tcp_subr.c 
  Log:
  SVN rev 221690 on 2011-05-09 07:37:47Z by mav
  
  Refactor TCP ISN increment logic. Instead of firing callout at 100Hz to
  keep constant ISN growth rate, do the same directly inside tcp_new_isn(),
  taking into account how much time (ticks) passed since the last call.
  
  On my test systems this decreases idle interrupt rate from 140Hz to 70Hz.
  
  Revision  Changes    Path
  1.378     +9 -32     src/sys/netinet/tcp_subr.c