Re: [patch v4 0/18] sched: simplified fork, release load avg andpower awareness scheduling

[Mike Galbraith]

On Mon, 2013-01-28 at 12:32 +0100, Mike Galbraith wrote: 
> On Mon, 2013-01-28 at 12:29 +0100, Borislav Petkov wrote: 
> > On Mon, Jan 28, 2013 at 11:44:44AM +0100, Mike Galbraith wrote:
> > > On Mon, 2013-01-28 at 10:55 +0100, Borislav Petkov wrote: 
> > > > On Mon, Jan 28, 2013 at 06:17:46AM +0100, Mike Galbraith wrote:
> > > > > Zzzt.  Wish I could turn turbo thingy off.
> > > > 
> > > > Try setting /sys/devices/system/cpu/cpufreq/boost to 0.
> > > 
> > > How convenient (test) works too.
> > > 
> > > So much for turbo boost theory.  Nothing changed until I turned load
> > > balancing off at NODE.  High end went to hell (gee), but low end... 
> > >   
> > > Benchmark       Version Machine Run Date
> > > AIM Multiuser Benchmark - Suite VII     "1.1"   performance-no-node-load_balance Jan 28 11:20:12 2013
> > > 
> > > Tasks   Jobs/Min        JTI     Real    CPU     Jobs/sec/task
> > > 1       436.3           100     13.9    3.9     7.2714
> > > 5       2637.1          99      11.5    7.3     8.7903
> > > 10      5415.5          99      11.2    11.3    9.0259
> > > 20      10603.7         99      11.4    24.8    8.8364
> > > 40      20066.2         99      12.1    40.5    8.3609
> > > 80      35079.6         99      13.8    75.5    7.3082
> > > 160     55884.7         98      17.3    145.6   5.8213
> > > 320     79345.3         98      24.4    287.4   4.1326
> > 
> > If you're talking about those results from earlier:
> > 
> > Benchmark       Version Machine Run Date
> > AIM Multiuser Benchmark - Suite VII     "1.1"   performance     Jan 28 08:09:20 2013
> > 
> > Tasks   Jobs/Min        JTI     Real    CPU     Jobs/sec/task
> > 1       438.8           100     13.8    3.8     7.3135
> > 5       2634.8          99      11.5    7.2     8.7826
> > 10      5396.3          99      11.2    11.4    8.9938
> > 20      10725.7         99      11.3    24.0    8.9381
> > 40      20183.2         99      12.0    38.5    8.4097
> > 80      35620.9         99      13.6    71.4    7.4210
> > 160     57203.5         98      16.9    137.8   5.9587
> > 320     81995.8         98      23.7    271.3   4.2706
> > 
> > then the above no_node-load_balance thing suffers a small-ish dip at 320
> > tasks, yeah.
> 
> No no, that's not restricted to one node.  It's just overloaded because
> I turned balancing off at the NODE domain level.

Which shows only that I was multitasking, and in a rush.  Boy was that
dumb.  Hohum.

-Mike

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