git: kernel - Reduce priority range from dynamic priority

Matthew Dillon dillon at
Mon Feb 6 23:15:10 PST 2017

commit abc0cda7b4a0a92afab15645d5adfac57af02866
Author: Matthew Dillon <dillon at>
Date:   Mon Feb 6 18:06:14 2017 -0800

    kernel - Reduce priority range from dynamic priority
    * Reduce the priority range that the estcpu mechanism can move a process
      over.  The general effect is that a nice +20 process will now get much
      less cpu than it used to verses a nice +0 process.
    * In addition, due to the change, a nice +20 process will not get any cpu
      at all verses a nice -12 or lower process.  Before a nice +20 process
      would always still get a little cpu verses a nice -20 process, but that
      will no longer be the case.

Summary of changes:
 sys/kern/usched_dfly.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

DragonFly BSD source repository

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