cvs commit: src/sys/netinet tcp_subr.c

[Robert Watson]

rwatson     2005-02-13 21:35:54 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_5)
    sys/netinet          tcp_subr.c 
  Log:
  Merge tcp_subr.c:1.216-1.217 from HEAD to RELENG_5:
  
    date: 2005/01/30 23:30:28;  author: rwatson;  state: Exp;  lines: +1 -1
    Have tcp_isn_tick() fire 100 times a second, rather than HZ times a
    second; since the default hz has changed to 1000 times a second,
    this resulted in unecessary work being performed.
  
    Discussed with:         phk, cperciva
    General head nod:       silby
  
    date: 2005/01/31 01:35:01;  author: rwatson;  state: Exp;  lines: +1 -1
    Update an additional reference to the rate of ISN tick callouts that was
    missed in tcp_subr.c:1.216: projected_offset must also reflect how often
    the tcp_isn_tick() callout will fire.
  
    Submitted by:   silby
  
  Note that although the default has not changed for HZ on i386 in RELENG_5,
  many sites run with elevated HZ for the purposes of DUMMYNET, etc.  This
  will reduce the CPU overhead of this.
  
  Revision    Changes    Path
  1.201.2.13  +2 -2      src/sys/netinet/tcp_subr.c