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.bugs Subject: bug#37000: 27.0.50; gc and laggy Emacs Date: Thu, 15 Aug 2019 18:34:43 +0300 Message-ID: <83y2zuphm4.fsf@gnu.org> References: <87a7ch9ea6.fsf@gmail.com> <837e7l7ymr.fsf@gnu.org> <87v9uywk7n.fsf@gmail.com> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="94504"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 37000@debbugs.gnu.org To: Alex Branham Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Aug 15 17:35:38 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hyHmr-000OJP-Hh for geb-bug-gnu-emacs@m.gmane.org; Thu, 15 Aug 2019 17:35:37 +0200 Original-Received: from localhost ([::1]:43058 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hyHmq-0003Rh-Ae for geb-bug-gnu-emacs@m.gmane.org; Thu, 15 Aug 2019 11:35:36 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38383) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hyHmL-0003RX-AW for bug-gnu-emacs@gnu.org; Thu, 15 Aug 2019 11:35:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hyHmI-0008Dv-TU for bug-gnu-emacs@gnu.org; Thu, 15 Aug 2019 11:35:05 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:43437) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hyHmI-0008Do-QF for bug-gnu-emacs@gnu.org; Thu, 15 Aug 2019 11:35:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hyHmI-0007gw-Iu for bug-gnu-emacs@gnu.org; Thu, 15 Aug 2019 11:35:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 15 Aug 2019 15:35:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 37000 X-GNU-PR-Package: emacs Original-Received: via spool by 37000-submit@debbugs.gnu.org id=B37000.156588329829553 (code B ref 37000); Thu, 15 Aug 2019 15:35:02 +0000 Original-Received: (at 37000) by debbugs.gnu.org; 15 Aug 2019 15:34:58 +0000 Original-Received: from localhost ([127.0.0.1]:52258 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hyHmE-0007gb-4D for submit@debbugs.gnu.org; Thu, 15 Aug 2019 11:34:58 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:54263) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hyHmC-0007gO-E8 for 37000@debbugs.gnu.org; Thu, 15 Aug 2019 11:34:56 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:49700) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hyHm7-000891-9V; Thu, 15 Aug 2019 11:34:51 -0400 Original-Received: from [176.228.60.248] (port=1753 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1hyHm6-0005So-NI; Thu, 15 Aug 2019 11:34:51 -0400 In-reply-to: <87v9uywk7n.fsf@gmail.com> (message from Alex Branham on Thu, 15 Aug 2019 09:56:44 -0500) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:165113 Archived-At: > From: Alex Branham > Cc: 37000@debbugs.gnu.org > Date: Thu, 15 Aug 2019 09:56:44 -0500 > > >> Recently I've noticed Emacs sometimes getting _very_ laggy, as in > >> taking up to a half-second to display the a single character that > >> I type. M-x profiler-start suggests that garbage-collection is > >> taking up too much time (see below my signature for example > >> output). gc-cons-percentage and gc-cons-threshold are at their > >> default values. I can't figure out how to reproduce this reliably, > >> but running M-x relint-directory on the Emacs source tree seems to > >> do a decent job triggering it. My Emacs is built from commit > >> 4ce9c6d0b58bd77bc811d6c1c5caf955a5a0be2f (~ 4 days ago) of the > >> master branch. How can I go about tracking this down? > > > > Trying to bisect to find the offending commit would be one way. > > Thanks. I noticed there's some activity around gc on master currently. > I'll wait for that to pass before trying this. Unless you happen to set gc-cons-threshold to a large value, that activity is already over. And in any case, invoking garbage-collection manually should "fix" the lagging, if it somehow related to what we are still discussing.