| commit | 51678651ff7394869fdbda610b6d7f1770b80564 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Mon, 20 Feb 2017 00:46:09 +0000 (19 16:46 -0800) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Mon, 20 Feb 2017 01:55:24 +0000 (19 17:55 -0800) | ||
| tree | f55e1b4819b6b31f6a4f0f1110f15ebad0c68a92 | treesnapshot (tar.gz zip) |
| parent | fefad7a79f2a97ff0878b0dc59f938a04a1cece3 | commitdiff |
kernel - Fix estcpu calculation
* No longer use uload to try to correct estcpu. It winds up inflating the
cpu use of other processes that use cpu but are not cpu-bound, creating
the same estcpu compression problem. The problem is less pronounced
without it.
* Remove the uload global. No longer useful and saves an unnecessary
cache line ping-pong.
* Refactor how p_nice affects p_priority. This causes nice levels to have
a greater effect.
* Make the forkbias programmable with a sysctl and set the default to 1,
which is a good, safe, all-around default.
* No longer use uload to try to correct estcpu. It winds up inflating the
cpu use of other processes that use cpu but are not cpu-bound, creating
the same estcpu compression problem. The problem is less pronounced
without it.
* Remove the uload global. No longer useful and saves an unnecessary
cache line ping-pong.
* Refactor how p_nice affects p_priority. This causes nice levels to have
a greater effect.
* Make the forkbias programmable with a sysctl and set the default to 1,
which is a good, safe, all-around default.
| sys/kern/usched_dfly.c | diffblobblamehistory |