From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: NS port: How to debug excessive garbage collection? Date: Fri, 12 Apr 2019 12:30:33 +0300 Message-ID: <83ftqnmuyu.fsf@gnu.org> References: Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="114826"; mail-complaints-to="usenet@blaine.gmane.org" Cc: emacs-devel@gnu.org To: Keith David Bershatsky Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Apr 12 11:31:42 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hEsX7-000TlN-NJ for ged-emacs-devel@m.gmane.org; Fri, 12 Apr 2019 11:31:41 +0200 Original-Received: from localhost ([127.0.0.1]:33116 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hEsX6-000815-Nk for ged-emacs-devel@m.gmane.org; Fri, 12 Apr 2019 05:31:40 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:58323) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hEsWJ-0007sf-AO for emacs-devel@gnu.org; Fri, 12 Apr 2019 05:30:54 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:46353) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hEsWI-0004r6-W5; Fri, 12 Apr 2019 05:30:51 -0400 Original-Received: from [176.228.60.248] (port=2843 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1hEsWI-0001zE-7p; Fri, 12 Apr 2019 05:30:50 -0400 In-reply-to: (message from Keith David Bershatsky on Thu, 11 Apr 2019 16:04:47 -0700) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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:235330 Archived-At: > Date: Thu, 11 Apr 2019 16:04:47 -0700 > From: Keith David Bershatsky > Cc: emacs-devel@gnu.org > > I performed three (3) tests wherein I held the right arrow-key (right-char) depressed for a few seconds in the *GNU Emacs* welcome buffer: > > (progn > (setq timer-list nil > timer-idle-list nil) > (add-hook 'post-command-hook (lambda () (message "%s" (garbage-collect))))) I don't think this is a good idea. You need to see the results after performing the same commands in each case, not after every command. Or maybe just put a breakpoint inside garbage_collect_1, and see which of the *_consed variables goes up more in the modified version as compared to the unchanged master.