From owner-freebsd-stable@freebsd.org Sat Feb 17 20:38:10 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 5F756F0CDAF for ; Sat, 17 Feb 2018 20:38:10 +0000 (UTC) (envelope-from petefrench@ingresso.co.uk) Received: from constantine.ingresso.co.uk (unknown [IPv6:2a02:b90:3002:411::3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 059466B3F7 for ; Sat, 17 Feb 2018 20:38:09 +0000 (UTC) (envelope-from petefrench@ingresso.co.uk) Received: from cpc73666-dals20-2-0-cust303.20-2.cable.virginm.net ([82.47.237.48] helo=foula.drayhouse.twisted.org.uk) by constantine.ingresso.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.89 (FreeBSD)) (envelope-from ) id 1en9FG-000DOq-71 for freebsd-stable@freebsd.org; Sat, 17 Feb 2018 20:38:06 +0000 Subject: Re: stable/11 r329462 - Meltdown/Spectre MFC questions To: freebsd-stable@freebsd.org References: <20180217194726.GA79666@icarus.home.lan> <20180217201934.GA51895@gmail.com> From: Pete French Message-ID: Date: Sat, 17 Feb 2018 20:38:06 +0000 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <20180217201934.GA51895@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit 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: Sat, 17 Feb 2018 20:38:10 -0000 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.