From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: What makes set-window-buffer slow? Date: Fri, 24 Jun 2016 22:13:17 +0300 Message-ID: <83oa6q1jua.fsf@gnu.org> References: <576C04E4.9040000@gmail.com> <576C2054.3020705@gmail.com> <20160623181242.GB4946@acm.fritz.box> <576C2AAA.1090707@gmail.com> <83fus33ekr.fsf@gnu.org> <576C536A.6060503@gmail.com> <83bn2r2i0y.fsf@gnu.org> <576D2895.4020600@gmail.com> <83shw21yhs.fsf@gnu.org> <576D4160.90201@gmail.com> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1466795657 19469 80.91.229.3 (24 Jun 2016 19:14:17 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 24 Jun 2016 19:14:17 +0000 (UTC) Cc: acm@muc.de, emacs-devel@gnu.org, schwab@suse.de To: =?windows-1252?Q?Cl=E9ment?= Pit--Claudel Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Jun 24 21:14:17 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1bGWYR-0005z8-6C for ged-emacs-devel@m.gmane.org; Fri, 24 Jun 2016 21:14:15 +0200 Original-Received: from localhost ([::1]:46958 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bGWYP-00012W-Vg for ged-emacs-devel@m.gmane.org; Fri, 24 Jun 2016 15:14:13 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51708) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bGWYJ-00012G-UU for emacs-devel@gnu.org; Fri, 24 Jun 2016 15:14:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bGWYG-00080Z-Ec for emacs-devel@gnu.org; Fri, 24 Jun 2016 15:14:07 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:36959) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bGWYG-00080U-BU; Fri, 24 Jun 2016 15:14:04 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4168 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bGWYE-0001dM-9f; Fri, 24 Jun 2016 15:14:02 -0400 In-reply-to: <576D4160.90201@gmail.com> (message from =?windows-1252?Q?Cl?= =?windows-1252?Q?=E9ment?= Pit--Claudel on Fri, 24 Jun 2016 10:19:12 -0400) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:204733 Archived-At: > Cc: acm@muc.de, schwab@suse.de, emacs-devel@gnu.org > From: Clément Pit--Claudel > Date: Fri, 24 Jun 2016 10:19:12 -0400 > > The proof-shell functions do this: they handle communication with the subprocess. The main loop looks like this: > > * Fetch one command from the buffer > * Send it to the subprocess > * When a response arrives, call a hook > * Send the next command > > My code adds a functioon into that hook that calls set-window-buffer; when I remove that call, everything is snappy. When I add it back in, everything gets much slower (at least that's what I understand; this isn't happening on my machine). What is the purpose of calling set-window-buffer? Also, how come it doesn't happen on your machine? Are any customizations involved? Is your OS different from that of the other user?