Re: [RFC v1] Tunable sched_mc_power_savings=n

[David Collier-Brown]

Andi Kleen <andi@xxxxxxxxxxxxxx> said on Fri, 27 Jun 2008 00:38:53 +0200:
> > Peter Zijlstra wrote:
> > > > And your workload manager could just nice processes. It should probably
> > > > do that anyways to tell ondemand you don't need full frequency.
> > >
> > > Except that I want my nice 19 distcc processes to utilize as much cpu as
> > > possible, but just not bother any other stuff I might be doing...
> >
> > They already won't do that if you run ondemand and cpufreq. It won't
> > crank up the frequency for niced processes.


Tim Connors then wrote:
> Shouldn't there be a powernice, just as there is an ionice and a nice?
Hmmn, how about:

User Commands                                             nice(1)

NAME
    nice - invoke a command with an altered  priority

SYNOPSIS
    /usr/bin/nice [-increment | -n increment]  [-s|-i|-e|-p] command  [argu-
    ment...]

DESCRIPTION
    The nice utility invokes command, requesting that it be  run
    with a different  priority.  If -i is specified, the priority
    of (disk) I/O is modified. If -e is specified, ethernet (or
    other networking) priority is changed. If -p is specified, power
    usage priority is changed and if  -s is specified, or none 
    of -1, -e or -p  is specified, then system scheduling priority
    is modified...

--dave
--
David Collier-Brown            | Always do right. This will gratify
Sun Microsystems, Toronto      | some people and astonish the rest
davecb@xxxxxxx                 |                      -- Mark Twain
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