From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932780AbdDZSMX (ORCPT ); Wed, 26 Apr 2017 14:12:23 -0400 Received: from mout.gmx.net ([212.227.15.19]:51228 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932752AbdDZSMQ (ORCPT ); Wed, 26 Apr 2017 14:12:16 -0400 Message-ID: <1493230330.4132.4.camel@gmx.de> Subject: Re: TREE_SRCU slows hotplug by factor ~16 From: Mike Galbraith To: paulmck@linux.vnet.ibm.com Cc: LKML Date: Wed, 26 Apr 2017 20:12:10 +0200 In-Reply-To: <20170426175610.GA6491@linux.vnet.ibm.com> References: <20170424062220.GZ3956@linux.vnet.ibm.com> <1493019303.4617.6.camel@gmx.de> <20170424162442.GI3956@linux.vnet.ibm.com> <20170425223642.GA10931@linux.vnet.ibm.com> <20170426143145.GA5683@linux.vnet.ibm.com> <1493220380.6176.2.camel@gmx.de> <20170426154402.GT3956@linux.vnet.ibm.com> <1493221799.6176.5.camel@gmx.de> <1493228757.4132.2.camel@gmx.de> <20170426175544.GW3956@linux.vnet.ibm.com> <20170426175610.GA6491@linux.vnet.ibm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:bc8OG6sfUl173S1AjhHb0HSNHsjESEEYpxPO71nsbvMAO5kcnro ikkIAwNgT//CzVWQ8tCWZBW50z59XMP27TVdYACNznCSDFcqzZgOxE3mURuG0eloK/PoF0d UZsvtV/v3f+ra8jAOKUSc81IEv0314vs7Wee0kyCXGuh16ESte+WzIuGLZzp59ZoZgu/8wz DBtl4tKAPBnXr8q26CXUg== X-UI-Out-Filterresults: notjunk:1;V01:K0:nr+c30PYJW0=:5loLyb6d/dIGR7oUvq69UU 0EW1UbTjAxkP+yHositJA179p7CT0S3ZG76ExJxRtgAeTevrEbY7iZrIVF3Y6eXMsOywDyk8q VHsZDVxrbUxM8tFXpOJszSBOnwyHuPBVCiXVvdvi2xTPOqQtQdJToVymG9tk/6MOr45sdsSVu O3IBnEcDmR/pjV0tpvi5LFz6uKaxSpBdVzkevJuKEpyK3+gtL2n6vc/CMcDcwEbZ+3h+e1Jet S2y+Na7c+QLfgWCrl6ic9GLDqJxw9vhvBbH8fc0g2xzsKnHrp4BWXIdqpaW9oDUZhONK4lmek I3pR+XO0QD1n8+5hIXe4UYIoTmxBq7qIZN18qqpOCcy2SyH6fEVXlM2OGUOneo5NssMsOjoGH 368e5P4FhJ5rDX1MPFm+4M/QGx8wlZVqG78Jg5udElDhLbeNOWf4BmubVSH72wKiORMCIkGgo Z3u25gMcNIazTJDhk9GCPGYeQI5dbaucL4OwZEma7Ph/bZwn+y6L48pByeYAv9D6gi8/mzPSJ /u+RBCzlioYMi26KLlHOPzSJrp6/qMIbB7djWJqCvI+LUJBSeujhg3xsLqt1NFhjeww1QSwFE ylG3kB2zeyp+kHAg3ce5ez8gBpg877GmyCQdUwE8izmBc9h8UXpVZoeiAYzR+TisroLY8J8Kj zMmzVquReCGG7g4+lhfyomQUc1tCq+JBFANdPCymIbj6/p+AGmRPB2ZQ9pdBKLUxB1uBXCMmC U0HTMlhX4nkDMmXrNjQBKYqF2fT7b25JaVIL93wCqU+PL1iGJ2ZizEb+iCB5rOjAWD4Y6fHpa JsMWIsq Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2017-04-26 at 10:56 -0700, Paul E. McKenney wrote: > > OK, I do need to do more work. My current guess is that I should have > > set the default for srcutree.exp_holdoff to 25*1000 instead of 50*1000. > > But I am sure that further data will show me the error of my ways. ;-) I can give that a go tomorrow (too crispy now). > Oh, and my I add your Tested-by? Sure. -Mike