From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: David.Kastrup@t-online.de (David Kastrup) Newsgroups: gmane.emacs.devel Subject: Re: Any idea about what makes Emacs slow reading on pipes? Date: 19 May 2003 10:09:06 +0200 Sender: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Message-ID: References: <5x1xyye3y4.fsf@kfs2.cua.dk> <5xznllw0wp.fsf@kfs2.cua.dk> <84of20skuq.fsf@lucy.is.informatik.uni-duisburg.de> <84smrc47ga.fsf@lucy.is.informatik.uni-duisburg.de> <847k8oqmn8.fsf@lucy.is.informatik.uni-duisburg.de> <84vfw7z9bc.fsf@lucy.is.informatik.uni-duisburg.de> Reply-To: dak@gnu.org NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: main.gmane.org 1053332637 12839 80.91.224.249 (19 May 2003 08:23:57 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Mon, 19 May 2003 08:23:57 +0000 (UTC) Original-X-From: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Mon May 19 10:23:49 2003 Return-path: Original-Received: from quimby.gnus.org ([80.91.224.244]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 19Hfvb-0003IL-00 for ; Mon, 19 May 2003 10:23:27 +0200 Original-Received: from monty-python.gnu.org ([199.232.76.173]) by quimby.gnus.org with esmtp (Exim 3.12 #1 (Debian)) id 19Hg5J-0002P7-00 for ; Mon, 19 May 2003 10:33:29 +0200 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.10.13) id 19Hfqx-0003BY-03 for emacs-devel@quimby.gnus.org; Mon, 19 May 2003 04:18:39 -0400 Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.10.13) id 19Hfqe-0003AI-00 for emacs-devel@gnu.org; Mon, 19 May 2003 04:18:20 -0400 Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.10.13) id 19HfmO-0002Lb-00 for emacs-devel@gnu.org; Mon, 19 May 2003 04:14:01 -0400 Original-Received: from mailout08.sul.t-online.com ([194.25.134.20]) by monty-python.gnu.org with esmtp (Exim 4.10.13) id 19Hfi4-0008OR-00 for emacs-devel@gnu.org; Mon, 19 May 2003 04:09:28 -0400 Original-Received: from fwd08.sul.t-online.de by mailout08.sul.t-online.com with smtp id 19Hfi3-00007w-02; Mon, 19 May 2003 10:09:27 +0200 Original-Received: from localhost.localdomain (520018396234-0001@[62.226.11.172]) by fwd08.sul.t-online.com with esmtp id 19Hfhk-0ezw6CC; Mon, 19 May 2003 10:09:08 +0200 Original-Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by localhost.localdomain (8.12.8/8.12.8) with ESMTP id h4J897ZF024010 for ; Mon, 19 May 2003 10:09:07 +0200 Original-Received: (from dak@localhost) by localhost.localdomain (8.12.8/8.12.8/Submit) id h4J8962d024006; Mon, 19 May 2003 10:09:06 +0200 Original-To: emacs-devel@gnu.org In-Reply-To: <84vfw7z9bc.fsf@lucy.is.informatik.uni-duisburg.de> Original-Lines: 25 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 X-Sender: 520018396234-0001@t-dialin.net X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1b5 Precedence: list List-Id: Emacs development discussions. List-Help: List-Post: List-Subscribe: , List-Archive: List-Unsubscribe: , Errors-To: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Xref: main.gmane.org gmane.emacs.devel:13995 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:13995 kai.grossjohann@gmx.net (Kai Gro=DFjohann) writes: > So I now retried the whole thing with two xterms, one running the > dd, and another running the infloop. I also had a third window > running, a Konsole with a blinking cursor. >=20 > I see the same behavior as previously, when I was using two Konsole > windows and Emacs with a blinking cursor. >=20 > Hm. Well, I can't reliably trigger the behavior with xterms here myself. Probably the empty loop does only in some cases cause preemption of the xterm, and there was something else involved. Which kernel, by the way? Anyhow, I also posted an Emacs test program, and that would probably pretty reliably show the effect. My Emacs test program runs about a factor of 3 faster when I have an od -v /dev/zero xterm running at the same time. --=20 David Kastrup, Kriemhildstr. 15, 44793 Bochum