From owner-freebsd-hackers@freebsd.org Thu Sep 3 04:58:44 2015 Return-Path: Delivered-To: freebsd-hackers@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 8AFA49C72C6 for ; Thu, 3 Sep 2015 04:58:44 +0000 (UTC) (envelope-from rpokala@panasas.com) Received: from na01-bl2-obe.outbound.protection.outlook.com (mail-bl2on0086.outbound.protection.outlook.com [65.55.169.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client CN "mail.protection.outlook.com", Issuer "MSIT Machine Auth CA 2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 2856B232 for ; Thu, 3 Sep 2015 04:58:43 +0000 (UTC) (envelope-from rpokala@panasas.com) Received: from CY1PR08MB1803.namprd08.prod.outlook.com (10.162.218.25) by CY1PR08MB1803.namprd08.prod.outlook.com (10.162.218.25) with Microsoft SMTP Server (TLS) id 15.1.256.15; Thu, 3 Sep 2015 04:58:40 +0000 Received: from CY1PR08MB1803.namprd08.prod.outlook.com ([10.162.218.25]) by CY1PR08MB1803.namprd08.prod.outlook.com ([10.162.218.25]) with mapi id 15.01.0256.013; Thu, 3 Sep 2015 04:58:40 +0000 From: "Pokala, Ravi" To: Pavel Timofeev CC: "freebsd-hackers@freebsd.org" Subject: Re: Quick question: sc(4) vs vt(4) Thread-Topic: Quick question: sc(4) vs vt(4) Thread-Index: AQHQ5cyeqrODlPB0aE2qvnPtg/+DBZ4qO2eA//+OC4A= Date: Thu, 3 Sep 2015 04:58:39 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.5.4.150722 authentication-results: spf=none (sender IP is ) smtp.mailfrom=rpokala@panasas.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [24.6.178.251] x-microsoft-exchange-diagnostics: 1; CY1PR08MB1803; 5:duuVSZRd46JIMCSd+uRTmKojCsBhyGEV4vm1ipkhCUB/x3YEsfndfKipoIzUG/8Dxa0ecRu8AslvswjJfAt1L7zmBnZ80wdhx/MeTAkUy4RXHsjLyT7LG7AzAy9rXkAmMT/4U83IvZFsYi8OeVZolQ==; 24:izn6hkXHDFwLd0bkUBFUZOxoFYhXRuiVg12dMg4tKx3gEzKBnVt85n9fvKnbyRr/DsYr737EUYRYlDx4c+PmniavojK3ZZIsBjTKugdkNEY=; 20:mdmSP1lBIKoOSlXInGG2aiNaxmWnYEDwVuDEqe4SVdvJFrFpHgxRu0x/UI5Z/U3RkYMKdyyQYvQU6RcoU872IA== x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:CY1PR08MB1803; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(601004)(8121501046)(5005006)(3002001); SRVR:CY1PR08MB1803; BCL:0; PCL:0; RULEID:; SRVR:CY1PR08MB1803; x-forefront-prvs: 0688BF9B46 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(6009001)(377424004)(199003)(13464003)(164054003)(189002)(2900100001)(97736004)(110136002)(54356999)(101416001)(99286002)(1411001)(92566002)(106356001)(2950100001)(86362001)(50986999)(81156007)(64706001)(66066001)(5002640100001)(77096005)(189998001)(5001960100002)(4001540100001)(102836002)(68736005)(76176999)(4001350100001)(5001860100001)(10400500002)(19580405001)(40100003)(122556002)(77156002)(19580395003)(62966003)(5001830100001)(87936001)(36756003)(46102003)(83506001)(106116001)(105586002)(5007970100001)(5004730100002); DIR:OUT; SFP:1101; SCL:1; SRVR:CY1PR08MB1803; H:CY1PR08MB1803.namprd08.prod.outlook.com; FPR:; SPF:None; PTR:InfoNoRecords; A:1; MX:1; LANG:en; received-spf: None (protection.outlook.com: panasas.com does not designate permitted sender hosts) spamdiagnosticoutput: 1:23 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: panasas.com X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Sep 2015 04:58:39.6022 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: acf01c9d-c699-42af-bdbb-44bf582e60b0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR08MB1803 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Sep 2015 04:58:44 -0000 -----Original Message----- From: Pavel Timofeev Date: 2015-09-02, Wednesday at 21:46 To: Ravi Pokala Cc: "freebsd-hackers@freebsd.org" Subject: Re: Quick question: sc(4) vs vt(4) >Hi! The only problem I experienced with vt(4) is extremely slow work in >default mode under some virtualization platforms, for example, Hyper-V. Thanks Pavel, that's good to know. We're mostly concerned with running on bare metal, so that won't be a concern for us. >vt(4) can be switched to text mode to make things better though. Yeah, one of my colleagues found the hw.vga.textmode setting. The VGA console is a going to be a rarely-used fallback (the expected case is using the serial console), so staying in textmode is just fine. Thanks, Ravi