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Date: Mon, 28 Oct 2002 09:35:37 -0800
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Erich Focht <efocht@ess.nec.de>
cc: Michael Hohnbaum <hohnbaum@us.ibm.com>, mingo@redhat.com,
       habanero@us.ibm.com, linux-kernel@vger.kernel.org,
       lse-tech@lists.sourceforge.net
Subject: Re: NUMA scheduler  (was: 2.5 merge candidate list 1.5)
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> I'm puzzled about the initial load balancing impact and have to think
> about the results I've seen from you so far... In the environments I am
> used to, the frequency of exec syscalls is rather low, therefore I didn't
> care too much about the sched_balance_exec performance and prefered to
> try harder to achieve good distribution across the nodes.

OK, but take a look at Michael's second patch. It still looks at
nr_running on every queue in the system (with some slightly strange
code to make a rotating choice on nodes on the case of equality),
so should still be able to make the best decision .... *but* it
seems to be much cheaper to execute. Not sure why at this point,
given the last results I sent you last night ;-)

M.

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