From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: [PATCH] Console based mouse face highlighting. Date: Wed, 16 May 2007 06:16:54 +0300 Message-ID: References: <17989.37070.393150.565546@kahikatea.snap.net.nz> <17990.21422.577087.305723@kahikatea.snap.net.nz> <17990.37305.657724.344516@kahikatea.snap.net.nz> <17992.53379.953892.751275@kahikatea.snap.net.nz> <17993.11948.400368.430713@kahikatea.snap.net.nz> <858xbp4vr2.fsf@lola.goethe.zz> Reply-To: Eli Zaretskii NNTP-Posting-Host: lo.gmane.org X-Trace: sea.gmane.org 1179285425 32058 80.91.229.12 (16 May 2007 03:17:05 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 16 May 2007 03:17:05 +0000 (UTC) Cc: nickrob@snap.net.nz, emacs-devel@gnu.org To: David Kastrup Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed May 16 05:17:02 2007 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1HoA0b-0000di-6N for ged-emacs-devel@m.gmane.org; Wed, 16 May 2007 05:17:01 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HoA8X-0007hf-3o for ged-emacs-devel@m.gmane.org; Tue, 15 May 2007 23:25:13 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HoA8S-0007eY-Vz for emacs-devel@gnu.org; Tue, 15 May 2007 23:25:09 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HoA8R-0007dv-HZ for emacs-devel@gnu.org; Tue, 15 May 2007 23:25:08 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HoA8R-0007ds-Bq for emacs-devel@gnu.org; Tue, 15 May 2007 23:25:07 -0400 Original-Received: from romy.inter.net.il ([213.8.233.24]) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1HoA0T-0007Lu-OB; Tue, 15 May 2007 23:16:53 -0400 Original-Received: from HOME-C4E4A596F7 (IGLD-80-230-147-83.inter.net.il [80.230.147.83]) by romy.inter.net.il (MOS 3.7.3-GA) with ESMTP id HVU51797 (AUTH halo1); Wed, 16 May 2007 06:16:52 +0300 (IDT) In-reply-to: <858xbp4vr2.fsf@lola.goethe.zz> (message from David Kastrup on Tue, 15 May 2007 23:33:53 +0200) X-detected-kernel: FreeBSD 4.7-5.2 (or MacOS X 10.2-10.4) (2) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:71137 Archived-At: > Cc: Nick Roberts , emacs-devel@gnu.org > From: David Kastrup > Date: Tue, 15 May 2007 23:33:53 +0200 > > >> Is cursor movement expensive on GNU/Linux? > > > > I don't think so, but in any case, it is IMO wrong to try to optimize > > this case before you actually see that it slows down redisplay. I > > suggest to do it right first, and worry about speed afterwards, if > > needed. > > "Expensive" is probably the wrong question. With regard to CPU usage, > cursor movement on a tty will be negligible. This is a display issue, where ``expensive'' generally means ``slow'', not ``CPU intensive''. > However, it may have visual effects (depending on the terminal in > question), and one of the reasons for using a tty in the first place > might be a lack of bandwidth or high latency. If the link is very slow, one can always disable this feature.