From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#15390: 24.3; scrolling in emacs,w32 uses 100% cpu Date: Mon, 16 Sep 2013 10:13:59 +0300 Message-ID: <837gehqlvs.fsf@gnu.org> References: <838uyxqndb.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1379315718 2609 80.91.229.3 (16 Sep 2013 07:15:18 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 16 Sep 2013 07:15:18 +0000 (UTC) Cc: 15390@debbugs.gnu.org To: zack.stackson@gmail.com Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Sep 16 09:15:19 2013 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VLT1i-00032j-Tp for geb-bug-gnu-emacs@m.gmane.org; Mon, 16 Sep 2013 09:15:19 +0200 Original-Received: from localhost ([::1]:60188 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLT1i-0004cP-FM for geb-bug-gnu-emacs@m.gmane.org; Mon, 16 Sep 2013 03:15:18 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60682) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLT1a-0004bq-1T for bug-gnu-emacs@gnu.org; Mon, 16 Sep 2013 03:15:15 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VLT1U-0000Iu-34 for bug-gnu-emacs@gnu.org; Mon, 16 Sep 2013 03:15:09 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:59991) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLT1U-0000HS-0A for bug-gnu-emacs@gnu.org; Mon, 16 Sep 2013 03:15:04 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1VLT1S-0005F3-LB for bug-gnu-emacs@gnu.org; Mon, 16 Sep 2013 03:15:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 16 Sep 2013 07:15:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15390 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 15390-submit@debbugs.gnu.org id=B15390.137931565520081 (code B ref 15390); Mon, 16 Sep 2013 07:15:02 +0000 Original-Received: (at 15390) by debbugs.gnu.org; 16 Sep 2013 07:14:15 +0000 Original-Received: from localhost ([127.0.0.1]:40050 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VLT0g-0005Dp-PY for submit@debbugs.gnu.org; Mon, 16 Sep 2013 03:14:15 -0400 Original-Received: from mtaout21.012.net.il ([80.179.55.169]:49583) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VLT0d-0005DW-FM for 15390@debbugs.gnu.org; Mon, 16 Sep 2013 03:14:13 -0400 Original-Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0MT700C00IR8U500@a-mtaout21.012.net.il> for 15390@debbugs.gnu.org; Mon, 16 Sep 2013 10:14:05 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MT700CV1IRGTL00@a-mtaout21.012.net.il>; Mon, 16 Sep 2013 10:14:05 +0300 (IDT) In-reply-to: <838uyxqndb.fsf@gnu.org> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:78445 Archived-At: > Date: Mon, 16 Sep 2013 09:41:52 +0300 > From: Eli Zaretskii > Cc: 15390@debbugs.gnu.org > > Emacs 24's display performance is sensitive to the paragraph length as > well. A paragraph start and end are defined for this purpose as empty > lines. Is it possible that the text files you used didn't have any > empty lines at all? If so, can you try files that do have empty > lines? In addition, the characters that begin a paragraph might be of importance. You say "text file", so I presume that is human-readable text, but it could also be a file with many digits and punctuation characters -- these make redisplay work harder. IOW, please show some representative portion(s) of the file(s) in question, or perhaps even the entire file, if you can share it. > I can only see performance similar to what you report on a laptop with > a Core i3-2328M at 2.2 GHz (running Windows 7 64-bit), a much slower > machine. I will try later on a desktop Windows 7 machine. Did that, and saw 20% to 30% CPU load, on a system that is powered by a Core 2 Duo CPU, clearly much slower than yours. Bottom line: I'm quite sure the file(s) you are using somehow hit the display engine in its underbelly.