From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753458AbdBJS1K (ORCPT ); Fri, 10 Feb 2017 13:27:10 -0500 Received: from esa1.hgst.iphmx.com ([68.232.141.245]:37634 "EHLO esa1.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752472AbdBJS1E (ORCPT ); Fri, 10 Feb 2017 13:27:04 -0500 X-IronPort-AV: E=Sophos;i="5.33,348,1477929600"; d="scan'208";a="83012702" X-AuditID: 0ac94369-ee7ff7000001e126-88-589e02d70fa9 Subject: Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq To: Paolo Valente References: <20170207172446.4528-1-paolo.valente@linaro.org> <1486745110.2840.3.camel@sandisk.com> <1241B224-A446-4C76-87BB-4EA63852B6D1@linaro.org> CC: "tj@kernel.org" , "axboe@kernel.dk" , "ulf.hansson@linaro.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "broonie@kernel.org" , "linus.walleij@linaro.org" From: Bart Van Assche Message-ID: <4a893c20-5a6b-a16c-073a-57c1a3d91b5a@sandisk.com> Date: Fri, 10 Feb 2017 10:13:41 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 MIME-Version: 1.0 In-Reply-To: <1241B224-A446-4C76-87BB-4EA63852B6D1@linaro.org> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpkkeLIzCtJLcpLzFFi42LhOum8SPcW07wIg+lbtCxW3+1ns5j68Amb xZQ/y5ks9t7Stri8aw6bxas/e5ksfi0/ymhxfG24A4fH5bOlHptWdbJ53Lm2h83j8ya5AJYo LpuU1JzMstQifbsErowHmxawF+ziqDiweQZjA+NE9i5GTg4JAROJmd9+MHUxcnEICSxlkmhv v8QC4exglLi28hwzTNWNS/OZoaoYJZrb3rGAJIQFTCXuLGplBbFFBHQk+l9dY4MomsEosawd Yi6zwGMmid9nfoJ1sAkYSXx7PxPM5hWwk9jU2scEYrMIqEocfPafDcQWFYiQmP90FRNEjaDE yZlPgOo5ODiB6idsCQIJMwsYSBxZNIcVwpaX2P52Dth1EgInWSUW/PzBCJIQElCXOLlkPtME RuFZSEbNQtI/C0n/AkbmVYxiuZk5xbnpqQWGpnrFiXkpmcXZesn5uZsYIRGTuYPx7hPvQ4wC HIxKPLwJx+dGCLEmlhVX5h5ilOBgVhLhtfkFFOJNSaysSi3Kjy8qzUktPsQozcGiJM57TmZq hJBAemJJanZqakFqEUyWiYNTqoHx+mpG753PotM9j4VZ5DI9flr+LlTm7v+s1S7zsjedMzk1 22eH0eFLj2bwNJ4/LGdZ8bVT/9aNjvqnK8V21s698mPZjQT9VUpvzc30v8R9ZF2TmfBblfXO 07M/3L6zGWR/8hU/d/68qm2c66nOVVqx6cmRHDOLdyxemLTp5531od/XhE9g4a/8q8RSnJFo qMVcVJwIAIa6OqCUAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrKJMWRmVeSWpSXmKPExsXCtZEjRfc607wIg883RCxW3+1ns5j68Amb xZQ/y5ks9t7Stri8aw6bxas/e5ksfi0/ymhxfG24A4fH5bOlHptWdbJ53Lm2h83j8ya5AJYo LpuU1JzMstQifbsErowHmxawF+ziqDiweQZjA+NE9i5GTg4JAROJG5fmM4PYQgKLGSW+Xc4H sYUFTCXuLGplBbFFBHQk+l9dY+ti5AKqmcEosaz9BxOIwyzwmEni18etTCBVbAJGEt/ez2QB sXkF7CQ2tfaBxVkEVCUOPvvPBmKLCkRIzH+6igmiRlDi5MwnQPUcHJxA9RO2BIGEmQX0JHZc /8UKYctLbH87h3kCI98sJB2zkJTNQlK2gJF5FaNYbmZOcW56ZoGhoV5xYl5KZnG2XnJ+7iZG cMByRu5gfDrR/BAjEwenVAOjUniwU9qrpJzYVwyW/zWD2W31fpYwbz396QKH6bXCCQ/Xc+8x 80qzf/KwZLbLw3WMv94l7uVrmiAiLKfbkTX7crdf53Or52zz7ioZTWJ9tl/ivdXClc2zBQ7P e2XlqW4ddG/1rGtc+ieLr2YdDWQM3Nidc/Fx4+HisELTXbH7VjN9m3qkeddOJZbijERDLeai 4kQAuePPYwgCAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/10/2017 08:49 AM, Paolo Valente wrote: >> $ grep '^C.*_MQ_' .config >> CONFIG_BLK_MQ_PCI=y >> CONFIG_MQ_IOSCHED_BFQ=y >> CONFIG_MQ_IOSCHED_DEADLINE=y >> CONFIG_MQ_IOSCHED_NONE=y >> CONFIG_DEFAULT_MQ_BFQ_MQ=y >> CONFIG_DEFAULT_MQ_IOSCHED="bfq-mq" >> CONFIG_SCSI_MQ_DEFAULT=y >> CONFIG_DM_MQ_DEFAULT=y >> > > Could you reconfigure with none or mq-deadline as default, check > whether the system boots, and, it it does, switch manually to bfq-mq, > check what happens, and, in the likely case of a failure, try to get > the oops? Hello Paolo, I just finished performing that test with the following kernel config: $ grep '^C.*_MQ_' .config CONFIG_BLK_MQ_PCI=y CONFIG_MQ_IOSCHED_BFQ=y CONFIG_MQ_IOSCHED_DEADLINE=y CONFIG_MQ_IOSCHED_NONE=y CONFIG_DEFAULT_MQ_DEADLINE=y CONFIG_DEFAULT_MQ_IOSCHED="mq-deadline" CONFIG_SCSI_MQ_DEFAULT=y CONFIG_DM_MQ_DEFAULT=y After the system came up I logged in, switched to the bfq-mq scheduler and ran several I/O tests against the boot disk. Sorry but nothing interesting appeared in the kernel log. Bart.