linux-kernel - Re: [RFC] Fair-user scheduler

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Message-ID: <20070131151647.GA23004@in.ibm.com>
Date:	Wed, 31 Jan 2007 20:46:47 +0530
From:	Srivatsa Vaddagiri <vatsa@...ibm.com>
To:	"Chris Friesen" <cfriesen@...tel.com>
Cc:	riel@...hat.com, Ingo Molnar <mingo@...e.hu>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: [RFC] Fair-user scheduler

On Fri, Jan 26, 2007 at 12:41:27PM -0600, Chris Friesen wrote:
> As Kirill brought up, why does it take so much more time?  Are you 
> thrashing the cache?

Yes, the default 1-sec control window I had was causing lot of
thrashing. See http://lkml.org/lkml/2007/1/31/142

> Presumably this would be made generic, as in per-"group" rather than per 
> user?

Ideally yes! But I am trying to apply the solution to an existing problem
and later extend for other needs as well.

> >	- Fairsched aware SMP load balance NOT addressed (yet)
> 
> This is kind of important, no?

Yea again! I have again avoided it to keep the patch simple at first.
Based on interest/response, I can address this later.


-- 
Regards,
vatsa
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