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#59641: term is very slow Date: Sun, 27 Nov 2022 22:31:05 +0200 Message-ID: <835yf0p2ba.fsf@gnu.org> References: <878rjwmale.fsf@disroot.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16228"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 59641@debbugs.gnu.org To: Akib Azmain Turja Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Nov 27 21:31:15 2022 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 1ozOJ1-00043s-L7 for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 27 Nov 2022 21:31:15 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ozOIq-0007QC-Hr; Sun, 27 Nov 2022 15:31:04 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ozOIp-0007M4-6v for bug-gnu-emacs@gnu.org; Sun, 27 Nov 2022 15:31:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ozOIo-0002wf-GK for bug-gnu-emacs@gnu.org; Sun, 27 Nov 2022 15:31:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ozOIo-0000Ks-CT for bug-gnu-emacs@gnu.org; Sun, 27 Nov 2022 15:31:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 27 Nov 2022 20:31:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 59641 X-GNU-PR-Package: emacs Original-Received: via spool by 59641-submit@debbugs.gnu.org id=B59641.16695810451283 (code B ref 59641); Sun, 27 Nov 2022 20:31:02 +0000 Original-Received: (at 59641) by debbugs.gnu.org; 27 Nov 2022 20:30:45 +0000 Original-Received: from localhost ([127.0.0.1]:44080 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ozOIW-0000Kd-Np for submit@debbugs.gnu.org; Sun, 27 Nov 2022 15:30:45 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:60086) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ozOIU-0000KX-Th for 59641@debbugs.gnu.org; Sun, 27 Nov 2022 15:30:43 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ozOIP-0002tC-N4; Sun, 27 Nov 2022 15:30:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=5iz8ZbLpaqn3Epco9c1xUQoNcaX2c7y8+7pWUJzkoa0=; b=dM2KolWM3PVn JW5i5Nat3W4poEtRCU7htqMcwdx4azrjJatdllTO8UyvNOQvgfsMRowvHwG9kaJTv9q4Vp5FI3NhH KxOawuneRTQrcDsfh/RdK0VKrsxGu9SCjYroT0exdqWi1uB94h0Xju8v8Q1x9P4AA0e7FQKf3JTxy +5wrpdkRLYtptvRY06UvIBO2VinqoOavjYxJKMUqLztuhvD49GHw/xUBqoAD5NrQPk0kEbyeZLIvk GNxAUWe3MkbKkDALRj4HZoO2tvAMzSmFuiEZMC5apXJD4vEJRbmNKD06+jF+mX9hznqvpn0/85re4 NmlUF4zFhkEFdXXfmHAqDg==; Original-Received: from [87.69.77.57] (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 1ozOIN-0007t5-NE; Sun, 27 Nov 2022 15:30:37 -0500 In-Reply-To: <878rjwmale.fsf@disroot.org> (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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:249248 Archived-At: > Date: Mon, 28 Nov 2022 02:00:29 +0600 > From: Akib Azmain Turja via "Bug reports for GNU Emacs, > the Swiss army knife of text editors" > > Term mode is very slow. On my computer, Coterm is 2-3x faster than > term, and my own terminal emulator, Eat, is 4-5x faster. > > I tried to profile Term. Steps: > > 1. emacs -Q (+ -nw, environment variable DISPLAY was unset) > 2. M-x profiler-start RET cpu+mem RET > 3. M-x term > 4. Run the following stupid command: > timeout 1 bash -c 'i=0 ; while true ; do echo $i ; i=$((i+1)) ; done' > Note I also run emacs -nw in before this command. > 5. Wait for finishing. > 6. M-x profiler-stop > 7. M-x profiler-report > > Here are the reports (attached), but don't seem to be human readable: Copy them from the display shown by profiler-report, after you expand it completely. And the "cpu" profile is enough; the "mem" one doesn't add anything useful.