From owner-freebsd-stable@freebsd.org Sun Feb 18 12:57:22 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 99FB2F04CCA for ; Sun, 18 Feb 2018 12:57:22 +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 2D02D750DD for ; Sun, 18 Feb 2018 12:57:22 +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 w1ICvLv9030713 (version=TLSv1 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO) for ; Sun, 18 Feb 2018 07:57:21 -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 w1ICvJnV064414; Sun, 18 Feb 2018 07:57:20 -0500 (EST) (envelope-from mike@sentex.net) Subject: Re: stable/11 r329462 - Meltdown/Spectre MFC questions To: Pete French , freebsd-stable@freebsd.org References: <20180217194726.GA79666@icarus.home.lan> <20180217201934.GA51895@gmail.com> From: Mike Tancsa Organization: Sentex Communications Message-ID: Date: Sun, 18 Feb 2018 07:57:19 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 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: Sun, 18 Feb 2018 12:57:22 -0000 did a few simple buildworlds before and after on an Epyc box, and it had no significant impact. Its vulnerable just to spectre. I am just updating an intel box to see the impact of the Meltdown fixes. From what I recall, apps that do a lot of system calls will have the largest impact. ---Mike On 2/17/2018 3:38 PM, Pete French wrote: > > > On 17/02/2018 20:19, Matt Smith wrote: > >> And thank you for pointing this out. I can now just wait a while to >> see what comes along rather than accidentally upgrading it and killing >> the already really slow performance. >> > I was just looking at this too, and wondering what (if any) the > performance impact is on FreeBSD. I had a quick google to see if I could > fine anything on current about it, but no luck. Anyone done any > measurements ? > > -pete. > _______________________________________________ > freebsd-stable@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > > -- ------------------- Mike Tancsa, tel +1 519 651 3400 x203 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada