Hi,
I found in top(1) a call to nice(3) that I think that should be changed to
setpriority(2). When given the -q flag the manpage claims that top will be
reniced to -20.
This is implemented trough nice(3) taking advantage that a program are loaded
with 0 niceness priority, so decrementing 20 will give the desired result.
As the goal is to set to a specific priority, I think it could simply use
setpriority(2).
The patch bellow does that.
Index: usr.bin/top/top.c
===================================================================
RCS file: /cvs/src/usr.bin/top/top.c,v
retrieving revision 1.88
diff -u -p -r1.88 top.c
--- usr.bin/top/top.c 5 Nov 2015 17:17:13 -0000 1.88
+++ usr.bin/top/top.c 17 Sep 2016 16:16:18 -0000
@@ -227,7 +227,7 @@ parseargs(int ac, char **av)
/* only allow this if user is really root */
if (getuid() == 0) {
/* be very un-nice! */
- (void) nice(-20);
+ (void) setpriority(PRIO_PROCESS, 0, -20);
break;
}
new_message(MT_delayed,
