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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2016-11-27 19:22:05 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2016-11-27 19:27:45 +0100 |
| commit | d145138ee0e69102242f26df852ed91558d7e6ba (patch) | |
| tree | d1372f1092826433373bee6ae8d99a2f1e9546eb /man7/sched.7 | |
| parent | 40f0931ccb165e35147007f865d0c235c47747ff (diff) | |
| download | man-pages-d145138ee0e69102242f26df852ed91558d7e6ba.tar.gz | |
sched.7: Add a new introductory paragraph describing the nice value
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man7/sched.7')
| -rw-r--r-- | man7/sched.7 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/man7/sched.7 b/man7/sched.7 index cae43fe134..c2ff00bbed 100644 --- a/man7/sched.7 +++ b/man7/sched.7 @@ -380,6 +380,19 @@ but denied to run by the scheduler. This ensures fair progress among all \fBSCHED_OTHER\fP threads. .\" .SS The nice value +The nice value is a per-process attribute +that can be used to influence the CPU scheduler to +favor or disfavor a process in scheduling decisions. +It affects the scheduling of +.BR SCHED_OTHER +and +.BR SCHED_BATCH +(see below) +processes. +According to POSIX.1, the threads in a process should share a nice value. +However, on Linux, the nice value is a per-thread attribute: +different threads in the same process may have different nice values. + The range of the nice value varies across UNIX systems. On modern Linux, the range is \-20 (high priority) to +19 (low priority). |