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#44007: 26.3; Strange shell mode performance Date: Mon, 06 Nov 2023 14:08:37 +0200 Message-ID: <83v8af2iey.fsf@gnu.org> References: <499ab53f-7c23-b5ed-6105-3072fffb4bfe@gmail.com> <83imbby3yt.fsf@gnu.org> <1cfcee64-0002-dedd-fb8f-528660e7c807@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="8589"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 44007@debbugs.gnu.org To: Herman =?UTF-8?Q?G=C3=A9za?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Nov 06 13:09:51 2023 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 1qzyQQ-00022i-3W for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 06 Nov 2023 13:09:50 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qzyQA-000421-5M; Mon, 06 Nov 2023 07:09:34 -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 1qzyQ1-00040K-Pv for bug-gnu-emacs@gnu.org; Mon, 06 Nov 2023 07:09:29 -0500 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qzyQ1-0001lv-Hh for bug-gnu-emacs@gnu.org; Mon, 06 Nov 2023 07:09:25 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qzyQc-00066W-Hh for bug-gnu-emacs@gnu.org; Mon, 06 Nov 2023 07:10:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 06 Nov 2023 12:10:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 44007 X-GNU-PR-Package: emacs Original-Received: via spool by 44007-submit@debbugs.gnu.org id=B44007.169927257823429 (code B ref 44007); Mon, 06 Nov 2023 12:10:02 +0000 Original-Received: (at 44007) by debbugs.gnu.org; 6 Nov 2023 12:09:38 +0000 Original-Received: from localhost ([127.0.0.1]:38830 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qzyQE-00065p-7Q for submit@debbugs.gnu.org; Mon, 06 Nov 2023 07:09:38 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34162) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qzyQB-00065Z-Pc for 44007@debbugs.gnu.org; Mon, 06 Nov 2023 07:09:36 -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 1qzyPV-0001ha-14; Mon, 06 Nov 2023 07:08:53 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=Qf3etQcQm5tl6hea40op/wSy74ZgsrDVlnUrDY+iq6s=; b=LbUWQte5i5ZuvtvN8laJ JR2Oe0tTrDC5aAPvuuPFBfHPRcnXaaWjq5VChDxAaQtJkhFP5jlzse3Lu3DSClptBTcOfY9gMr49z ArBUdtlGwkj7p4ywvICgafL2hVeUTUIqfkA8wEzEHOhovXws92LsOjVAM5dsNN1s6PPxJ6yqpjZ2F b93lNmopaijbCSQXif8mzUIwPPGkQHxbJY7nQpcRc5YVpE58HEF3FVskI2E9qoyvdpb10269xkScF bKvCxZKBaU0bSrJN8XqL3ShWcmKUUJPx6QnpBIZK8v0fOsxGFwB42jBmccSY2yWAKOSIzshcvEo2u 5K4Msc9YhHPWzQ==; In-Reply-To: <1cfcee64-0002-dedd-fb8f-528660e7c807@gmail.com> (message from Herman, =?UTF-8?Q?G=C3=A9za?= on Sun, 5 Nov 2023 17:46:15 +0100) 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:273866 Archived-At: > Date: Sun, 5 Nov 2023 17:46:15 +0100 > From: Herman, Géza > Cc: 44007@debbugs.gnu.org > > I think I found another thing which is needed: tty echo must be enabled. > With bash, echo is disabled by default, so the issue doesn't happen. > With zsh, echo is enabled by default, and the issue happens (I'm not > sure why zsh turns on echo). > > So either one has to use zsh to repro the issue, or use these updated steps: > 1. emacs -Q > 2. M-x shell RET > 3. stty echo > 4. seq 100000 > > With echo disabled, "seq 100000" takes ~0.2 sec. With echo enabled, it > takes 3 sec (and pressing RET immediately after executing seq makes it > fast). I'm not sure what exactly are we trying to do here. AFAIU, at least 2 variables were discovered that can speed up this example, so what else has to be done? Is there any bug here, and if so, what is the bug?