Re: 2.6.0-test8/test9 io scheduler needs tuning?

[cliff white]

On Tue, 28 Oct 2003 10:50:04 +1100
Nick Piggin <piggin@xxxxxxxxxxxxxxx> wrote:

> 
> 
> cliff white wrote:
> 
> >On Tue, 28 Oct 2003 05:52:45 +0800
> >Michael Frank <mhf@xxxxxxxxxxxxx> wrote:
> >
> >
> >>To my surprise 2.6 - which used to do better then 2.4 - does no longer 
> >>handle these test that well.

> >STP id Kernel Name         MaxJPM      Change  Options
> >281669 linux-2.6.0-test8   7014.42      0.0    
> >281671 linux-2.6.0-test8   8294.94     +18.26%  elevator=deadline
> >
> >The -mm kernels don't show this big delta. We also do not see this delta on
> >smaller machines
> >
> 
> I'm working with Randy to fix this. Attached is what I have so far. See how
> you go with it.

So far, looks quite good. ( i know 2.4.18 is wierd for some, but they were
hot off the stp, so i used 'em )

4-cpu
STP id Kernel Name         MaxJPM      Change  Options
282391 linux-2.4.18        5250.23     0.00	
282413 Nick's patch	   5484.95     4.27   elevator=deadline
282413 Nick's patch        5416.51     3.06

282395 linux-2.4.18        6581.17     0.0
282415 Nick's patch        8293.95     20.6
282415 Nick's patch        8484.95     22.43 elevator=deadline

And, the graph is nice and flat!
http://khack.osdl.org/stp/282416/results/jpm.png

Full results: http://developer.osdl.org/cliffw/reaim/index.html

Any test detail: http://khack.osdl.org/stp/<STP id>

cliffw

> 


-- 
The church is near, but the road is icy.
The bar is far, but i will walk carefully. - Russian proverb
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