Re: [BENCHMARK] 2.5.61-mm1 +/- as or cfq with contest

[Andrew Morton <akpm@digeo.com>]

Jens Axboe <axboe@suse.de> wrote:
>
> On Sun, Feb 16 2003, Con Kolivas wrote:
> > On Sun, 16 Feb 2003 08:51 pm, Jens Axboe wrote:
> > > On Sun, Feb 16 2003, Con Kolivas wrote:
> > > > Here are contest (http://contest.kolivas.org) results with osdl
> > > > (http://www.osdl.org) hardware for 2.5.61-mm1 with either the as i/o
> > > > scheduler or the cfq scheduler.
> > > >
> > > > io_load:
> > > > Kernel         [runs]   Time    CPU%    Loads   LCPU%   Ratio
> > > > 2.5.60-mm1          3   112     67.0    15.7    7.1     1.42
> > > > 2.5.61              2   143     52.4    32.9    13.3    1.81
> > > > 2.5.61-mm1          2   634     12.5    257.3   24.6    7.83
> > > > 2.5.61-mm1cfq       3   397     19.6    123.3   18.1    5.03
> > >
> > > These loo fishy, could be some other interaction. I'm consistently
> > > beating 2.5.60-mm1/2.5.61 on io_load here, but that is 2.5.61 base and
> > > not 2.5.61-mm1 base. Could be something odd happening there.
> > 
> > I dont think they're fishy - taken in the mm1 context -. I have tested cfq3a 
> > without mm1 and it does beat the baseline. See a previous email I posted with 
> > it.
> 
> I didn't mean that you have done something fishy, but that there's a
> fishy interaction between -mm + CFQ :)
> 

It is the CPU scheduler patch.  Con has eariler shown that this patch shoots
io_load in the head.  2.5.60-mm1 did not have that patch.