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[209.132.180.67]) by mx.google.com with ESMTP id a26si2071960pfj.267.2018.02.23.08.49.35; Fri, 23 Feb 2018 08:49:50 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=merlin.20170209 header.b=1r08lwpn; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751885AbeBWQsB (ORCPT + 99 others); Fri, 23 Feb 2018 11:48:01 -0500 Received: from merlin.infradead.org ([205.233.59.134]:39972 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751728AbeBWQsA (ORCPT ); Fri, 23 Feb 2018 11:48:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=mjxb8afWvGwRoLKpgedTQ3IbZ7Di/BMnIVSSSUqPI1U=; b=1r08lwpnyKkDySJrawxf8rw9P oJfpH8ci6DBsawYLRVHFtz6z1C2tfN9+sJOkjChQ5Kf8T3pEVUeWBzHPoQ+cYyHg0ewvQ/siI2Njb TIqb7vgfx4V0EML//qNF7J4QFHbsRQmZvljzBQ9Fd1QBdPgCsJcDKlDNBTX3Nz2OUhVYtnuvqpqil Wl3O1e8KzcKojUrNcHMUV8tyKKwZocZ0mW9IgeC/Cdz1j2bKVrPCzmHw3/8mGQQ/dZJe6d0EQefMl JtWM1Lz32Q9X7tVTFwQuJsJL0kvKMqeTWc66SDNX8Pbh3dUKvWvT3iMOSPjXFM1/6jbAZu8Tx9qo/ 9ZG/ecg5w==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.89 #1 (Red Hat Linux)) id 1epGVn-0004ME-50; Fri, 23 Feb 2018 16:47:55 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 979D8202A062D; Fri, 23 Feb 2018 17:47:52 +0100 (CET) Date: Fri, 23 Feb 2018 17:47:52 +0100 From: Peter Zijlstra To: Morten Rasmussen Cc: mingo@redhat.com, valentin.schneider@arm.com, dietmar.eggemann@arm.com, vincent.guittot@linaro.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 4/7] sched/fair: Avoid unnecessary balancing of asymmetric capacity groups Message-ID: <20180223164752.GW25181@hirez.programming.kicks-ass.net> References: <1518711654-23503-1-git-send-email-morten.rasmussen@arm.com> <1518711654-23503-5-git-send-email-morten.rasmussen@arm.com> <20180219151011.GI25181@hirez.programming.kicks-ass.net> <20180220163352.GD4589@e105550-lin.cambridge.arm.com> <20180220182605.GI25201@hirez.programming.kicks-ass.net> <20180223163806.GE4589@e105550-lin.cambridge.arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180223163806.GE4589@e105550-lin.cambridge.arm.com> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 23, 2018 at 04:38:06PM +0000, Morten Rasmussen wrote: > > Or am I now terminally confused again? > > No, I think you are right, or I'm equally confused. :-) Would it make sense to also track max_capacity, but then based on the value before RT scaling ? That should readily be able to distinguish between big and little clusters, although then DynamiQ would still completely ruin things.