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#43389: 28.0.50; Emacs memory leaks using hard disk all time Date: Sat, 12 Dec 2020 21:51:15 +0200 Message-ID: <83lfe2erbg.fsf@gnu.org> References: <83y2j0qb2v.fsf@gnu.org> <43b8f55b-d201-76e0-2d19-d97dec8798aa@redhat.com> <87im9ttfeg.fsf@mail.trevorbentley.com> <399d4681-940a-c782-b91e-750e62840cb6@redhat.com> <83pn40qkyb.fsf@gnu.org> <418751f6-41be-a5e2-908a-ea4196d5fb9b@redhat.com> <83y2inq2sp.fsf@gnu.org> <60253612-49f0-a1aa-b9e6-39cfef8d62b5@redhat.com> <83mtz3p7qy.fsf@gnu.org> <83lfenp78f.fsf@gnu.org> <83h7pbp5wh.fsf@gnu.org> <83v9dpn9em.fsf@gnu.org> <87sg8ts766.fsf@mail.trevorbentley.com> <87pn3usr13.fsf@mail.trevorbentley.com> <87eek0rmqa.fsf@mail.trevorbentley.com> <83zh2l33fv.fsf@gnu.org> <87zh2jqnhi.fsf@mail.trevorbentley.com> <837dpn1ccp.fsf@gnu.org> <83pn3eesq3.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="29853"; mail-complaints-to="usenet@ciao.gmane.io" Cc: fweimer@redhat.com, 43389@debbugs.gnu.org, bugs@gnu.support, dj@redhat.com, carlos@redhat.com, trevor@trevorbentley.com, michael_heerdegen@web.de To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Dec 12 21:34:31 2020 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 1koBb5-0007eN-FB for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 12 Dec 2020 21:34:31 +0100 Original-Received: from localhost ([::1]:36986 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1koBb4-000269-HK for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 12 Dec 2020 15:34:30 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41478) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1koAvy-0002Ck-8m for bug-gnu-emacs@gnu.org; Sat, 12 Dec 2020 14:52:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:35145) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1koAvx-0002Om-SK for bug-gnu-emacs@gnu.org; Sat, 12 Dec 2020 14:52:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1koAvx-0006xN-RC for bug-gnu-emacs@gnu.org; Sat, 12 Dec 2020 14:52:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 12 Dec 2020 19:52:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 43389 X-GNU-PR-Package: emacs Original-Received: via spool by 43389-submit@debbugs.gnu.org id=B43389.160780269926713 (code B ref 43389); Sat, 12 Dec 2020 19:52:01 +0000 Original-Received: (at 43389) by debbugs.gnu.org; 12 Dec 2020 19:51:39 +0000 Original-Received: from localhost ([127.0.0.1]:46691 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1koAvb-0006wm-Fe for submit@debbugs.gnu.org; Sat, 12 Dec 2020 14:51:39 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:48230) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1koAvZ-0006wY-Cc for 43389@debbugs.gnu.org; Sat, 12 Dec 2020 14:51:37 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:50736) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1koAvT-00024w-H6; Sat, 12 Dec 2020 14:51:31 -0500 Original-Received: from [176.228.60.248] (port=4006 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1koAvS-0000rw-S6; Sat, 12 Dec 2020 14:51:31 -0500 In-Reply-To: (message from Stefan Monnier on Sat, 12 Dec 2020 14:46:20 -0500) 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" Xref: news.gmane.io gmane.emacs.bugs:195893 Archived-At: > From: Stefan Monnier > Cc: trevor@trevorbentley.com, carlos@redhat.com, fweimer@redhat.com, > 43389@debbugs.gnu.org, bugs@gnu.support, dj@redhat.com, > michael_heerdegen@web.de > Date: Sat, 12 Dec 2020 14:46:20 -0500 > > > Sure. But isn't that the same as what I said, just from another POV? > > "A lot of objects to sweep" means there are many objects that aren't > > live and need to have their memory freed. > > > > Since GC wasn't run for many hours, having a lot of garbage to collect > > is expected, right? > > Could be, but for tens of minutes? If the system is paging, it could take that long, yes. > AFAIK gc_sweep shouldn't cause too much thrashing either (the sweep is > a mostly sequential scan of memory, so even if the total heap is larger > than your total RAM, it should be ~O(total heap size / bandwidth from > swap partition)), so I can't imagine how we could spend tens of minutes > doing gc_sweep (or maybe the time is spend in gc_sweep but doing > something else than the sweep itself, e.g. handling weak pointers, or > removing dead markers from marker lists, ... still seems hard to > imagine spending tens of minutes, tho). Does gc_sweep involve touching all the memory we free?