From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Randy Yates Newsgroups: gmane.emacs.devel Subject: Re: emacs takes exhorbitantly long to read long, one-line files. Date: Mon, 20 May 2013 07:03:08 -0400 Organization: Digital Signal Labs Message-ID: <877git6hhv.fsf@digitalsignallabs.com> References: <87ppwn62yr.fsf@digitalsignallabs.com> <5199E19A.3020503@yandex.ru> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1369049011 10648 80.91.229.3 (20 May 2013 11:23:31 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 20 May 2013 11:23:31 +0000 (UTC) Cc: emacs-devel@gnu.org To: Dmitry Antipov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon May 20 13:23:30 2013 Return-path: Envelope-to: ged-emacs-devel@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 1UeOBb-0000L7-RR for ged-emacs-devel@m.gmane.org; Mon, 20 May 2013 13:23:27 +0200 Original-Received: from localhost ([::1]:51666 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UeOBb-00020I-8U for ged-emacs-devel@m.gmane.org; Mon, 20 May 2013 07:23:27 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:42706) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UeOBS-000203-IX for emacs-devel@gnu.org; Mon, 20 May 2013 07:23:24 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UeOBL-0000lk-TU for emacs-devel@gnu.org; Mon, 20 May 2013 07:23:18 -0400 Original-Received: from mailrelay.embarq.synacor.com ([208.47.184.3]:58237) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UeOBL-0000iH-Or for emacs-devel@gnu.org; Mon, 20 May 2013 07:23:11 -0400 X_CMAE_Category: 0,0 Undefined,Undefined X-CNFS-Analysis: v=2.1 cv=YO6ml32x c=1 sm=0 tr=0 a=JO1zTxoNnPLDpb8eQHNrCw==:117 a=JO1zTxoNnPLDpb8eQHNrCw==:17 a=OVjENCxEW14A:10 a=n4xtcAnayDkA:10 a=x1JHTF3VILYA:10 a=yrnTiy7_AAAA:8 a=VYsShAg9AAAA:8 a=8ip5ltkN0hcA:10 a=vaJtXVxTAAAA:8 a=hAupZ2NjW4E1qDfceNQA:9 X-CM-Score: 0 X-Scanned-by: Cloudmark Authority Engine Authentication-Results: smtp01.embarq.synacor.com smtp.user=yatesfreedarandy@centurylink.net; auth=pass (LOGIN) Original-Received: from [71.54.137.147] ([71.54.137.147:18966] helo=galois.digitalsignallabs.com) by smtp.centurylink.net (envelope-from ) (ecelerity 2.2.3.49 r(42060/42061)) with ESMTPA id 5E/B7-23376-DE20A915; Mon, 20 May 2013 07:03:09 -0400 Original-Received: from localhost.localdomain (nc-71-54-137-147.dhcp.embarqhsd.net [71.54.137.147]) by galois.digitalsignallabs.com (Postfix) with ESMTPA id A5C01E14FC; Mon, 20 May 2013 07:03:08 -0400 (EDT) In-Reply-To: <5199E19A.3020503@yandex.ru> (Dmitry Antipov's message of "Mon, 20 May 2013 12:40:58 +0400") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x X-Received-From: 208.47.184.3 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:159682 Archived-At: Dmitry Antipov writes: > On 05/19/2013 07:52 AM, Randy Yates wrote: > >> I have a file (a matlab .m file of a vector of data) that is all on >> one line and about 2 MB: >> >> http://www.digitalsignallabs.com/dspin.m >> >> emacs takes a very long time (6 minutes?) to read this in, and >> practically becomes unusable in the mean time. > > In this particular case, Emacs just thinks that your file is an Objective-C > source code, and tries to fontify it accordingly. This attempt implies a lot > of buffer scans, and substantial amount of them may be slow for the very > long lines. Since I suspect that you don't want to edit this as Obj-C, try: > > emacs --eval "(setq auto-mode-alist (cons '(\"\\.m\" . > fundamental-mode) auto-mode-alist))" dspin.m I already had that in my init.el. I've also tried creating an empty file and setting it to fundamental-mode. In both these cases the behavior is the same. I did notice that emacs is faster - but still unusably slow - when toggle-truncate-lines is true. -- Randy Yates Digital Signal Labs http://www.digitalsignallabs.com