From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#48871: 27.2; Unusably slow in C# mode Date: Sun, 06 Jun 2021 15:49:05 +0300 Message-ID: <835yyri2f2.fsf@gnu.org> References: Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="5633"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 48871@debbugs.gnu.org To: jan Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Jun 06 14:50:21 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lpsEP-0001Ev-GH for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 06 Jun 2021 14:50:21 +0200 Original-Received: from localhost ([::1]:58330 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lpsEN-0001Dw-Sy for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 06 Jun 2021 08:50:19 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34656) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lpsE6-0001Di-4X for bug-gnu-emacs@gnu.org; Sun, 06 Jun 2021 08:50:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:39399) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lpsE5-0007NL-U3 for bug-gnu-emacs@gnu.org; Sun, 06 Jun 2021 08:50:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lpsE5-0005EO-M9 for bug-gnu-emacs@gnu.org; Sun, 06 Jun 2021 08:50:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 06 Jun 2021 12:50:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 48871 X-GNU-PR-Package: emacs Original-Received: via spool by 48871-submit@debbugs.gnu.org id=B48871.162298376120060 (code B ref 48871); Sun, 06 Jun 2021 12:50:01 +0000 Original-Received: (at 48871) by debbugs.gnu.org; 6 Jun 2021 12:49:21 +0000 Original-Received: from localhost ([127.0.0.1]:50945 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lpsDO-0005DQ-2P for submit@debbugs.gnu.org; Sun, 06 Jun 2021 08:49:21 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:40830) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lpsDH-0005D7-Lz for 48871@debbugs.gnu.org; Sun, 06 Jun 2021 08:49:16 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:50196) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lpsDC-0006iw-9u; Sun, 06 Jun 2021 08:49:06 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:1694 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lpsDB-00047p-QN; Sun, 06 Jun 2021 08:49:06 -0400 In-Reply-To: (bug-gnu-emacs@gnu.org) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:208122 Archived-At: > Date: Sun, 6 Jun 2021 13:32:09 +0100 > From: jan via "Bug reports for GNU Emacs, > the Swiss army knife of text editors" > > C# mode is slow beyond to the point of being completely unusable. This > seems to have started when I upgraded from emacs 26 to emacs 27.2. The > file is ~220K. At the start of the file, typing takes 3 or 4 secs *per > character* to appear (at the end of the file, instantaneous). It's > forcing me to use visual studio to do all simple text editing and I > don't like that. > [...] > Turns out emacs has a profiler, thought I'd try it. Good start, thanks. > Not sure what to do. Post an example of a file where typing lags by several seconds, and let's see what people here can tell about that. But before that, start "emacs -Q", visit the C# file that gave you such trouble, and try typing there. If the lag disappears, then look for some of your customizations that could explain the slow responses.