cvs commit: src/sys/kern sched_ule.c

[David E. O'Brien]

obrien      2004/04/22 14:37:47 PDT

  FreeBSD src repository

  Modified files:
    sys/kern             sched_ule.c 
  Log:
  There was a thread on "unusually high load averages" when running under
  sched_ule, in January 2004.  Looking at this, "pagezero" is (one of) the
  culprit(s).  We had no provision for processes with P_NOLOAD set.  With
  pagezero not running at PRI_ITHD, kseq_load_{add,rem} count pagezero as
  another-normal-process, thus the "expected-plus-one" load reported in
  the above thread.
  
  Submitted by:   Nikos Ntarmos <ntarmos at ceid.upatras.gr>
  
  Revision  Changes    Path
  1.105     +2 -2      src/sys/kern/sched_ule.c