Re: Scheduler fairness problem on 2.6 series (Attn: Nick Piggin andothers)

[Peter Williams]

William Lee Irwin III wrote:
> On Tue, Aug 10, 2004 at 07:21:43PM -0700, spaminos-ker@xxxxxxxxx wrote:
>
> > I am not very familiar with all the parameters, so I just kept the defaults
> > Anything else I could try?
> > Nicolas
>
>
> No. It appeared that the SPA bits had sufficient fairness in them to
> pass this test but apparently not quite enough.

The interactive bonus may interfere with fairness (the throughput bonus 
should actually help it for tasks with equal nice) so you could try 
setting max_ia_bonus to zero (and possibly increasing max_tpt_bonus). 
With "eb" mode this should still give good interactive response but 
expect interactive response to suffer a little in "pb" mode however 
renicing the X server to a negative value should help.

Peter
PS There's a primitive GUI available for setting the scheduler 
parameters at 
<http://prdownloads.sourceforge.net/cpuse/gcpuctl_hydra-1.3.tar.gz?download>
this is just a Python script with a Glade XML file (gcpuctl_hydra.glade) 
which needs to be in the same directory that you run the script from.
--
Peter Williams                                   pwil3058@xxxxxxxxxxxxxx

"Learning, n. The kind of ignorance distinguishing the studious."
 -- Ambrose Bierce

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