Date: Tue, 29 May 2007 19:51:32 -0700
From: William Lee Irwin III <wli@holomorphy.com>
To: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Cc: "Li, Tong N" <tong.n.li@intel.com>, Nick Piggin <nickpiggin@yahoo.com.au>,
       tingy@cs.umass.edu, ckrm-tech@lists.sourceforge.net,
       Balbir Singh <balbir@in.ibm.com>, efault@gmx.de,
       pwil3058@bigpond.net.au, kernel@kolivas.org,
       linux-kernel@vger.kernel.org, containers@lists.osdl.org,
       Ingo Molnar <mingo@elte.hu>, torvalds@linux-foundation.org,
       akpm@linux-foundation.org
Subject: Re: [ckrm-tech] [RFC] [PATCH 0/3] Add group fairness to CFS
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References: <20070523164859.GA6595@in.ibm.com> <20070523180316.GY19966@holomorphy.com> <20070525161424.GA5162@in.ibm.com> <1180113298.28264.24.camel@tongli.jf.intel.com> <20070528163919.GA28054@in.ibm.com>
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On Mon, May 28, 2007 at 10:09:19PM +0530, Srivatsa Vaddagiri wrote:
> What do these task weights control? Timeslice primarily? If so, I am not
> sure how well it can co-exist with cfs then (unless you are planning to
> replace cfs with a equally good interactive/fair scheduler :)
> I would be very interested if this weight calculation can be used for
> smpnice based load balancing purposes too ..

Task weights represent shares of CPU bandwidth. If task i has weight w_i
then its share of CPU bandwidth is intended to be w_i/sum_i w_i.

"Load weight" seems to be used more in the scheduler source.


-- wli
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