From owner-freebsd-stable@freebsd.org Mon Jan 22 20:57:34 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1AC82ED53C5 for ; Mon, 22 Jan 2018 20:57:34 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost2.sentex.ca (smarthost2.sentex.ca [IPv6:2607:f3e0:80:80::2]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client CN "smarthost.sentex.ca", Issuer "smarthost.sentex.ca" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id BFB8F6E639; Mon, 22 Jan 2018 20:57:33 +0000 (UTC) (envelope-from mike@sentex.net) Received: from lava.sentex.ca (lava.sentex.ca [IPv6:2607:f3e0:0:5::11]) by smarthost2.sentex.ca (8.15.2/8.15.2) with ESMTPS id w0MKvWpS063772 (version=TLSv1 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Mon, 22 Jan 2018 15:57:32 -0500 (EST) (envelope-from mike@sentex.net) Received: from [192.168.43.26] (saphire3.sentex.net [192.168.43.26]) by lava.sentex.ca (8.15.2/8.15.2) with ESMTP id w0MKvUea058244; Mon, 22 Jan 2018 15:57:30 -0500 (EST) (envelope-from mike@sentex.net) Subject: Re: Ryzen issues on FreeBSD ? To: Don Lewis Cc: freebsd-stable@freebsd.org, Pete French References: <8e842dec-ade7-37d1-6bd8-856ea1a827ca@sentex.net> <8dcf6cc8fad788ac8168a4a9f392b02e@foolishgames.com> <23c1d162-dcd8-c422-3114-d70b65b6c271@sentex.net> <00875e4d-740f-63f1-496c-6cda82b1a403@ingresso.co.uk> <52744797-0606-44e7-72dd-242a6b56066a@digiware.nl> From: Mike Tancsa Organization: Sentex Communications Message-ID: <4e53080c-4257-d3b6-a097-0d54602e0e62@sentex.net> Date: Mon, 22 Jan 2018 15:57:30 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.78 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jan 2018 20:57:34 -0000 On 1/21/2018 3:24 PM, Don Lewis wrote: >> >> I have supplied a customer with a Ryzen5 and a 350MB motherboard. >> But he runs Windows 10, but I haven't heard him complain about anything >> like this. >> But I'll ask him specific. > > Only the BSDs were affected by the shared page issue. I think Linux > already had a guard page. I don't think Windows was affected by the > idle C-state issue. I suspect it is caused by software not doing the > right thing during C-state transitions, but the publicly available > documentation from AMD is pretty lacking. The random segfault issue is > primarily triggered by heavy parallel software build loads and how many > Windows users do that? Are all the AMD accomodations that DragonFly did in FreeBSD ? http://lists.dragonflybsd.org/pipermail/commits/2017-August/626190.html ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/