From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.help Subject: Re: Towards a large file mode, slowness Date: Thu, 03 Jul 2008 13:54:29 -0600 Message-ID: References: <200807021414.03497.andreas.roehler@easy-emacs.de> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1215114990 15601 80.91.229.12 (3 Jul 2008 19:56:30 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 3 Jul 2008 19:56:30 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Jul 03 21:57:16 2008 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1KEUvZ-0006fD-FB for geh-help-gnu-emacs@m.gmane.org; Thu, 03 Jul 2008 21:57:13 +0200 Original-Received: from localhost ([127.0.0.1]:51557 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KEUui-000641-Jz for geh-help-gnu-emacs@m.gmane.org; Thu, 03 Jul 2008 15:56:20 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KEUtC-0005WM-NI for help-gnu-emacs@gnu.org; Thu, 03 Jul 2008 15:54:46 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KEUtB-0005Uq-1J for help-gnu-emacs@gnu.org; Thu, 03 Jul 2008 15:54:46 -0400 Original-Received: from [199.232.76.173] (port=55878 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KEUtA-0005Ug-PA for help-gnu-emacs@gnu.org; Thu, 03 Jul 2008 15:54:44 -0400 Original-Received: from main.gmane.org ([80.91.229.2]:49796 helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1KEUtA-0003Gl-8X for help-gnu-emacs@gnu.org; Thu, 03 Jul 2008 15:54:44 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1KEUt2-0001ui-Mi for help-gnu-emacs@gnu.org; Thu, 03 Jul 2008 19:54:36 +0000 Original-Received: from c-67-190-29-163.hsd1.co.comcast.net ([67.190.29.163]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 03 Jul 2008 19:54:36 +0000 Original-Received: from kevin.d.rodgers by c-67-190-29-163.hsd1.co.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 03 Jul 2008 19:54:36 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 33 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: c-67-190-29-163.hsd1.co.comcast.net User-Agent: Thunderbird 2.0.0.14 (Macintosh/20080421) In-Reply-To: <200807021414.03497.andreas.roehler@easy-emacs.de> X-detected-kernel: by monty-python.gnu.org: Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:55231 Archived-At: Andreas Röhler wrote: > Hi, > > dealing with large files, exceeding emacs capabilities, > idea is to use `sed' to deliver subsequent chunks. > > This seems possible if the files structur is line-separated, > if no single line exceeds max volume. > > For example that way: > > sed -n '111,130p' ein.txt > > In the real program below the range is given by var > `ltm-start-line' and > > (+ ltm-start-line ltm-line-step) > > If I call `sed' from within an Emacs-Shell, its quite > fast regardless of the files volume. > > Using `shell-command-to-string' or `call-process' as > the program below, it's slowed down > considerably. > > Any ideas how to avoid this? Read the thread re: "opening large files (few hundred meg)" from January - February for some other ideas on how to implement this. -- Kevin Rodgers Denver, Colorado, USA