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[46.139.12.213]) by smtp.gmail.com with ESMTPSA id d1sm8751465wrb.61.2019.04.28.23.14.24 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 28 Apr 2019 23:14:25 -0700 (PDT) Date: Mon, 29 Apr 2019 08:14:22 +0200 From: Ingo Molnar To: "Li, Aubrey" Cc: Aubrey Li , Julien Desfossez , Vineeth Remanan Pillai , Nishanth Aravamudan , Peter Zijlstra , Tim Chen , Thomas Gleixner , Paul Turner , Linus Torvalds , Linux List Kernel Mailing , Subhra Mazumdar , =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker , Kees Cook , Greg Kerr , Phil Auld , Aaron Lu , Valentin Schneider , Mel Gorman , Pawan Gupta , Paolo Bonzini Subject: Re: [RFC PATCH v2 00/17] Core scheduling v2 Message-ID: <20190429061422.GA20939@gmail.com> References: <20190425095508.GA8387@gmail.com> <20190427091716.GC99668@gmail.com> <20190427142137.GA72051@gmail.com> <20190428093304.GA7393@gmail.com> <20190428121721.GA121434@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Li, Aubrey wrote: > > I suspect it's pretty low, below 1% for all rows? > > Hope my this mail box works for this... > > .-------------------------------------------------------------------------------------------------------------. > |NA/AVX vanilla-SMT [std% / sem%] | coresched-SMT [std% / sem%] +/- | no-SMT [std% / sem%] +/- | > |-------------------------------------------------------------------------------------------------------------| > | 1/1 508.5 [ 0.2%/ 0.0%] | 504.7 [ 1.1%/ 0.1%] -0.8%| 509.0 [ 0.2%/ 0.0%] 0.1% | > | 2/2 1000.2 [ 1.4%/ 0.1%] | 1004.1 [ 1.6%/ 0.2%] 0.4%| 997.6 [ 1.2%/ 0.1%] -0.3% | > | 4/4 1912.1 [ 1.0%/ 0.1%] | 1904.2 [ 1.1%/ 0.1%] -0.4%| 1914.9 [ 1.3%/ 0.1%] 0.1% | > | 8/8 3753.5 [ 0.3%/ 0.0%] | 3748.2 [ 0.3%/ 0.0%] -0.1%| 3751.3 [ 0.4%/ 0.0%] -0.1% | > | 16/16 7139.3 [ 2.4%/ 0.2%] | 7137.9 [ 1.8%/ 0.2%] -0.0%| 7049.2 [ 2.4%/ 0.2%] -1.3% | > | 32/32 10899.0 [ 4.2%/ 0.4%] | 10780.3 [ 4.4%/ 0.4%] -1.1%| 10339.2 [ 9.6%/ 0.9%] -5.1% | > | 64/64 15086.1 [11.5%/ 1.2%] | 14262.0 [ 8.2%/ 0.8%] -5.5%| 11168.7 [22.2%/ 1.7%] -26.0% | > |128/128 15371.9 [22.0%/ 2.2%] | 14675.8 [14.4%/ 1.4%] -4.5%| 10963.9 [18.5%/ 1.4%] -28.7% | > |256/256 15990.8 [22.0%/ 2.2%] | 12227.9 [10.3%/ 1.0%] -23.5%| 10469.9 [19.6%/ 1.7%] -34.5% | > '-------------------------------------------------------------------------------------------------------------' Perfectly presented, thank you very much! My final questin would be about the environment: > Skylake server, 2 numa nodes, 104 CPUs (HT on) Is the typical nr_running value the sum of 'NA+AVX', i.e. is it ~256 threads for the 128/128 row for example - or is it 128 parallel tasks? I.e. showing the approximate CPU thread-load figure column would be very useful too, where '50%' shows half-loaded, '100%' fully-loaded, '200%' over-saturated, etc. - for each row? Thanks, Ingo