From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Performance regression in CVS HEAD's *compilation* buffer Date: Sat, 29 Jan 2011 10:46:55 -0500 Message-ID: References: <18825.3759.960897.974404@priss.frightenedpiglet.com> <87vd184489.fsf@lola.goethe.zz> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1296316039 9526 80.91.229.12 (29 Jan 2011 15:47:19 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sat, 29 Jan 2011 15:47:19 +0000 (UTC) Cc: emacs-devel@gnu.org To: David Kastrup Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Jan 29 16:47:15 2011 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 4.69) (envelope-from ) id 1PjD19-0007oU-C5 for ged-emacs-devel@m.gmane.org; Sat, 29 Jan 2011 16:47:15 +0100 Original-Received: from localhost ([127.0.0.1]:51744 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PjD18-0008K9-VL for ged-emacs-devel@m.gmane.org; Sat, 29 Jan 2011 10:47:14 -0500 Original-Received: from [140.186.70.92] (port=38726 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PjD13-0008K4-Vr for emacs-devel@gnu.org; Sat, 29 Jan 2011 10:47:10 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PjD13-0007b6-2b for emacs-devel@gnu.org; Sat, 29 Jan 2011 10:47:09 -0500 Original-Received: from tomts5-srv.bellnexxia.net ([209.226.175.25]:40757) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PjD11-0007at-Q9; Sat, 29 Jan 2011 10:47:08 -0500 Original-Received: from toip5.srvr.bell.ca ([209.226.175.88]) by tomts5-srv.bellnexxia.net (InterMail vM.5.01.06.13 201-253-122-130-113-20050324) with ESMTP id <20110129154656.YKPO18540.tomts5-srv.bellnexxia.net@toip5.srvr.bell.ca>; Sat, 29 Jan 2011 10:46:56 -0500 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApsEAOrCQ01Fn/Gg/2dsb2JhbACld7sChU4EhRM Original-Received: from pcpqlogicpcs (HELO ceviche.home) ([69.159.241.160]) by toip5.srvr.bell.ca with ESMTP; 29 Jan 2011 10:46:55 -0500 Original-Received: by ceviche.home (Postfix, from userid 20848) id 9CD4E660DC; Sat, 29 Jan 2011 10:46:55 -0500 (EST) In-Reply-To: <87vd184489.fsf@lola.goethe.zz> (David Kastrup's message of "Sat, 29 Jan 2011 07:24:22 +0100") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Solaris 8 (1) X-Received-From: 209.226.175.25 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:135215 Archived-At: >>> I updated my CVS tree to HEAD today (2009-02-03, around noon PST), >>> compiled it, and started using it. My previous sync had been around >>> 2008-12-01. During that interval, the performance of inserting long >>> lines into the *compilation* buffer has dropped by an order of >>> magnitude. >> I've only recently started taking a look at compile.el and haven't had >> a chance to investigate this problem, but I just tried: >> M-x compile RET echo C-u 6400 x RET >> and it finished instantly. > Because that would arrive batched. Try > M-x compile RET echo C-u 6400 x | dd obs=1 RET Good point. But I just tried it and it seems to still be "instantaneous". Stefan