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#38345: 27.0.50; Permanent increase in memory consumption after opening images (or pdfs) Date: Tue, 26 Nov 2019 17:55:47 +0200 Message-ID: <83imn6skcc.fsf@gnu.org> References: <87sgme1ww7.fsf@yantar92-laptop.i-did-not-set--mail-host-address--so-tickle-me> <83o8x0rl6d.fsf@gnu.org> <87lfs2mzo8.fsf@yantar92-laptop.i-did-not-set--mail-host-address--so-tickle-me> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="170653"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 38345@debbugs.gnu.org To: Ihor Radchenko Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Nov 26 16:56:29 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 1iZdCX-000iIN-Iq for geb-bug-gnu-emacs@m.gmane.org; Tue, 26 Nov 2019 16:56:29 +0100 Original-Received: from localhost ([::1]:56568 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iZdCV-0002mv-Mr for geb-bug-gnu-emacs@m.gmane.org; Tue, 26 Nov 2019 10:56:27 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:32880) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iZdC9-0002jU-0K for bug-gnu-emacs@gnu.org; Tue, 26 Nov 2019 10:56:06 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iZdC7-0007GK-VO for bug-gnu-emacs@gnu.org; Tue, 26 Nov 2019 10:56:04 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:46802) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iZdC6-0007FS-8i for bug-gnu-emacs@gnu.org; Tue, 26 Nov 2019 10:56:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iZdC6-0003Wt-7U for bug-gnu-emacs@gnu.org; Tue, 26 Nov 2019 10:56:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 26 Nov 2019 15:56:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 38345 X-GNU-PR-Package: emacs Original-Received: via spool by 38345-submit@debbugs.gnu.org id=B38345.157478375013545 (code B ref 38345); Tue, 26 Nov 2019 15:56:02 +0000 Original-Received: (at 38345) by debbugs.gnu.org; 26 Nov 2019 15:55:50 +0000 Original-Received: from localhost ([127.0.0.1]:52774 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iZdBt-0003WN-L0 for submit@debbugs.gnu.org; Tue, 26 Nov 2019 10:55:50 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:52005) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iZdBs-0003WA-Iw for 38345@debbugs.gnu.org; Tue, 26 Nov 2019 10:55:48 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:59137) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iZdBn-00076i-CT; Tue, 26 Nov 2019 10:55:43 -0500 Original-Received: from [176.228.60.248] (port=1387 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1iZdBm-0000yc-LW; Tue, 26 Nov 2019 10:55:43 -0500 In-reply-to: <87lfs2mzo8.fsf@yantar92-laptop.i-did-not-set--mail-host-address--so-tickle-me> (message from Ihor Radchenko on Tue, 26 Nov 2019 23:21:11 +0800) 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:172442 Archived-At: > From: Ihor Radchenko > Cc: 38345@debbugs.gnu.org > Date: Tue, 26 Nov 2019 23:21:11 +0800 > > I did a small test by modifying my earlier lisp code to open and close > the same image list sequentially: > > #+begin_src emacs-lisp > (dolist (file (directory-files "~/Tosort/pictures&photos/" 'full ".*jpg")) > (find-file file) > (mapc #'kill-buffer (seq-filter (apply-partially #'string-match ".+.jpg$") (mapcar #'buffer-name (buffer-list))))) > #+end_src > > The resulting memory usage graph is attached. > > What we can see is that the memory is indeed growing (as expected). > Moreover, the memory consumption does not increase as much as if we open > all the images together. However, the final heap size appears to be over > 400Mb (from smaps), which is almost half of what was observed with all > the images open at the same time. Does it help to call garbage-collect after killing each buffer and before visiting the next image file? > P.S. Were there any attempts to implement garbage collection for emacs > in C code? I don't understand the question, sorry. GC in Emacs is implemented in C, not in Lisp. If you mean to use a garbage-collecting memory allocator, then we once had that only for buffer text, but nowadays system malloc is good enough for that, so we no longer use it. Doing that for "normal" C code is not easy because it generally requires double indirection for accessing data through pointers.