kern/38048: SCHED_M2 ignores nice

[dan%geek.com.au@localhost]

>Number:         38048
>Category:       kern
>Synopsis:       SCHED_M2 ignores nice
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 18 00:20:00 +0000 2008
>Originator:     Daniel Carosone
>Release:        NetBSD 4.99.54
>Organization:
        
>Environment:
System: NetBSD imslog 4.99.54 NetBSD 4.99.54 (_imslog_) #13: Thu Feb 14 
13:49:38 EST 2008  
dan@imslog:/home/NetBSD/obj/p4/home/NetBSD/HEAD/src/sys/arch/i386/compile/_imslog_
 i386
Architecture: i386
Machine: i386
>Description:

nice(1) does not work with SCHED_M2, nor as shell builtin using
nice(3) or via renice(8) or top(1) or other familiar tools.
                                                                                
                                                                                
              
I understand that I'm supposed to use schedctl(8) somehow instead,
unfortunately none of the application software that expects posix
niceness to work when launching jobs shares this understanding.

Not obeying niceness standard interfaces is a regression, even if
these are to be reimplemented somehow over schedctl.

>How-To-Repeat:

Try to nice processes, or have batch schedulers start background
processes with non-default nice values.

>Fix: