From owner-freebsd-hackers@freebsd.org Thu Sep 3 06:12:03 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 C23B89C863A for ; Thu, 3 Sep 2015 06:12:03 +0000 (UTC) (envelope-from yaneurabeya@gmail.com) Received: from mail-pa0-x233.google.com (mail-pa0-x233.google.com [IPv6:2607:f8b0:400e:c03::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 9F0FD95 for ; Thu, 3 Sep 2015 06:12:03 +0000 (UTC) (envelope-from yaneurabeya@gmail.com) Received: by pacex6 with SMTP id ex6so31140265pac.0 for ; Wed, 02 Sep 2015 23:12:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=ZpO+JssLECB+US4HOZhKF7AlDRAaOioTT4uOrD8VScY=; b=EYA9XRUG9cI+5Dev6cCz2FiSP8zWsbZadRFqsXEiVHZx8kZmQ0o9e2IvDQd0J1yf5q uh/1Dko5BPplABqwPI1o1IFbMqNLf3LQoZk9mDnGaW2ewul0LwBaCyKeRObhrXIIfASk u+XTm8SpHmUpdWA5SU3fFsbH30SKof1iL4iiKUBjygSFVfeDZazfe2xiessla9kOZbo1 Q5qPg4FPgjd4S828aIwqr4ZQY2dc/j+NV/GZLooUPpIz+yHS5dSfNQePwOBlDrKxt3lu gmtvuQN55/6Tsl4xKPway/9wEEx4JlcjbBc9gDBZNm1VXNxOZYyFlGzkG/1SDbvxugYs vlOg== X-Received: by 10.66.164.230 with SMTP id yt6mr62418102pab.149.1441260722981; Wed, 02 Sep 2015 23:12:02 -0700 (PDT) Received: from [21.138.3.77] ([172.56.33.91]) by smtp.gmail.com with ESMTPSA id fm5sm23778297pbb.60.2015.09.02.23.12.01 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 02 Sep 2015 23:12:02 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (1.0) Subject: Re: Quick question: sc(4) vs vt(4) From: Garrett Cooper X-Mailer: iPhone Mail (12H321) In-Reply-To: Date: Wed, 2 Sep 2015 23:12:01 -0700 Cc: Pavel Timofeev , "freebsd-hackers@freebsd.org" Content-Transfer-Encoding: quoted-printable Message-Id: References: To: "Pokala, Ravi" 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 06:12:03 -0000 > On Sep 2, 2015, at 21:58, Pokala, Ravi wrote: >=20 > -----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) >=20 >> Hi! The only problem I experienced with vt(4) is extremely slow work in >> default mode under some virtualization platforms, for example, Hyper-V. >=20 > 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. >=20 >> vt(4) can be switched to text mode to make things better though. >=20 > 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. The performance is a bit slow until it hits userland real and virtual for me= ... Has been for months.=