Re: [ANNOUNCE][RFC] PlugSched-6.3.1 for 2.6.16-rc5

[Peter Williams <pwil3058@bigpond.net.au>]

Con Kolivas wrote:
> On Tuesday 04 April 2006 09:04, Peter Williams wrote:
>> Al Boldi wrote:
> 
>>> Is there a module to autotune these values according to cpu/mem/ctxt
>>> performance?
> 
> I think you're thinking of Jake's genetic algorithms (separate patch). They 
> tune the zaphod scheduler but bear in mind the limitation of such an 
> algorithm is they can only tune for one workload which means that if you have 
> two workloads running concurrently with different requirements, the other 
> will suffer.
> 
>>> Also, different schedulers per cpu could be rather useful.
>>> Peter Williams wrote:
>> I think that would be dangerous.  However, different schedulers per
>> cpuset might make sense but it involve a fair bit of work.
> 
> I'm curious. How do you think different schedulers per cpu would be useful?

I don't but I think they MIGHT make sense for cpusets e.g. one set with 
a scheduler targeted at interactive tasks and another targeted at server 
tasks.  NB the emphasis on might.

Peter
-- 
Peter Williams                                   pwil3058@bigpond.net.au

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