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[216.228.121.64]) by mx.google.com with ESMTPS id s4si2690111ywf.128.2019.02.05.13.56.00 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Feb 2019 13:56:00 -0800 (PST) Received-SPF: pass (google.com: domain of jhubbard@nvidia.com designates 216.228.121.64 as permitted sender) client-ip=216.228.121.64; Authentication-Results: mx.google.com; dkim=pass header.i=@nvidia.com header.s=n1 header.b=OO0ZZE3q; spf=pass (google.com: domain of jhubbard@nvidia.com designates 216.228.121.64 as permitted sender) smtp.mailfrom=jhubbard@nvidia.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nvidia.com Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Tue, 05 Feb 2019 13:55:28 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Tue, 05 Feb 2019 13:56:00 -0800 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Tue, 05 Feb 2019 13:56:00 -0800 Received: from [10.110.48.28] (10.124.1.5) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 5 Feb 2019 21:55:59 +0000 Subject: Re: [PATCH 0/6] RFC v2: mm: gup/dma tracking To: Tom Talpey , , Andrew Morton , CC: Al Viro , Christian Benvenuti , Christoph Hellwig , Christopher Lameter , Dan Williams , Dave Chinner , Dennis Dalessandro , Doug Ledford , Jan Kara , Jason Gunthorpe , Jerome Glisse , Matthew Wilcox , Michal Hocko , Mike Rapoport , Mike Marciniszyn , Ralph Campbell , LKML , References: <20190204052135.25784-1-jhubbard@nvidia.com> <80d503f5-038b-7f0b-90d5-e5b9537ae1df@nvidia.com> <303ab506-62b7-ee6d-27a0-a818c7ff6473@talpey.com> From: John Hubbard X-Nvconfidentiality: public Message-ID: Date: Tue, 5 Feb 2019 13:55:59 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <303ab506-62b7-ee6d-27a0-a818c7ff6473@talpey.com> X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL104.nvidia.com (172.18.146.11) To HQMAIL101.nvidia.com (172.20.187.10) Content-Type: text/plain; charset="utf-8" Content-Language: en-US-large Content-Transfer-Encoding: 7bit DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1549403729; bh=wMhcdXCHqf6V6KTLtjLRAAlffUFv2sOj48RQqhjWWzg=; h=X-PGP-Universal:Subject:To:CC:References:From:X-Nvconfidentiality: Message-ID:Date:User-Agent:MIME-Version:In-Reply-To: X-Originating-IP:X-ClientProxiedBy:Content-Type:Content-Language: Content-Transfer-Encoding; b=OO0ZZE3qlHVf7SLdzkvxMWo8XPxxiTP0f0GbZjWPp4EwFzG8T3wH/G90QrC6UY+cr JCi0vR8kO1CQ3Zdhp4G2h1lQf45kXjhbwe5mTO4TNxbZE0we2A/YGY3MMqhK/nrdEE eyAjKEEabxwN341c/4qSWtvue/sbKfSrwdWIgLYquHT71qrxziTp4K0ntquXnOw2ZM 5eWdd0BVHj9lyakmUVr4gl3zoIcsDVAX62yvqMpjjBJaMPrL1mTJCPZD9NwZ1X3Tbq yEDowBywN1BKTGq6Ewl5ClbhZ+Scn8ItHzjdc4m6fYhwAqBSq171mOvpyyauKHBgmU ohRJzyuCO5GNg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2/5/19 5:38 AM, Tom Talpey wrote: > > Ok, I'm satisfied the four-9's latency spike is in not your code. :-) > Results look good relative to baseline. Thanks for doublechecking! > > Tom. Great, in that case, I'll put the new before-and-after results in the next version. Appreciate your help here, as always! thanks, -- John Hubbard NVIDIA