bug#51763: 27.2; Displaying many images take all memory

[Thierry Volpiatto]

Hello,

I see you changed image-dired to use image-mode in emacs-29 instead of using 
like
before image-magick.  That's fine I used the same approach two years ago
in Helm, but switched back quickly to image-dired because it was taking
all memory and it was not recoverable until I kill emacs. I thought it
was my fault but I see new image-dired in emacs-29 have same problem:

1) emacs -Q
2) Open a large image directory with dired
3) Open files one by one with C-t i until memory is full (use f3 C-t i
C-n f4 etc...). Memory starts to grow seriously after around 70 files
for me.

Killing the image-dired buffer changes nothing, I have to restart emacs
to recover memory.

And now unfortunately I have no more alternatives with Helm in emacs-29 since
image-dired uses inconditionally this.

You can reproduce the same bug with helm by setting
helm-ff-display-image-native to `t` and from helm-find-files hit
C-<down> repetitively in same image directory (not using
helm-ff-display-image-native i.e. with nil value is now broken with new 
image-dired).


In GNU Emacs 27.2 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.30, cairo 
version 1.15.10)
 of 2021-03-25 built on IPadS340
Windowing system distributor 'The X.Org Foundation', version 11.0.12008000
System Description: Linux Mint 19.3

Recent messages:
C-c C-g is undefined
Quit
Auto-saving...done
Auto-saving...done
Send this bug report to the Emacs maintainers? (y or n) y
Quit
[mu4e] Switch to Posteo
[mu4e] Switched context to Posteo
Mark set [2 times]
Message modified; kill anyway? (y or n) y

Configured using:
 'configure CFLAGS=-O8 --without-dbus --without-gconf
 --without-gsettings --with-mailutils --with-cairo'

Configured features:
XPM JPEG TIFF GIF PNG RSVG CAIRO SOUND GPM GLIB NOTIFY INOTIFY ACL
LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS LIBSYSTEMD JSON
PDUMPER LCMS2 GMP

Important settings:
  value of $LANG: fr_FR.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Elisp

Minor modes in effect:
  bug-reference-prog-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  psession-mode: t
  psession-savehist-mode: t
  global-git-gutter-mode: t
  git-gutter-mode: t
  display-time-mode: t
  winner-mode: t
  show-paren-mode: t
  helm-epa-mode: t
  helm-descbinds-mode: t
  helm-adaptive-mode: t
  helm-mode: t
  shell-dirtrack-mode: t
  helm-popup-tip-mode: t
  async-bytecomp-package-mode: t
  dired-async-mode: t
  minibuffer-depth-indicate-mode: t
  override-global-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
/home/thierry/.emacs.d/elpa/seq-2.23/seq hides 
/usr/local/share/emacs/27.2/lisp/emacs-lisp/seq

Features:
(epa-mail face-remap addressbook-bookmark mu4e-config org-mu4e
mu4e-contrib mu4e-patch mu4e mu4e-org mu4e-view gnus-art mm-uu mml2015
mm-view mml-smime smime dig gnus-sum gnus-group gnus-undo gnus-start
gnus-cloud nnimap nnmail mail-source utf7 netrc nnoo gnus-spec gnus-int
gnus-range gnus-win mu4e-main mu4e-headers mu4e-lists mu4e-compose
mu4e-draft mu4e-actions smtpmail mu4e-search mu4e-bookmarks mu4e-mark
mu4e-message shr svg dom flow-fill hl-line mu4e-contacts mu4e-update
mu4e-folders mu4e-server mu4e-context mu4e-vars mu4e-helpers ido
mu4e-meta shadow sort mail-extr emacsbug sendmail helm-command epa-file
em-unix em-term term disp-table ehelp em-script em-prompt em-ls em-hist
em-pred em-glob em-dirs esh-var em-cmpl em-basic em-banner em-alias
esh-mode esh-toggle tramp-archive tramp-gvfs dbus helm-x-files
helm-for-files helm-bookmark bookmark pp sh-script smie executable
vc-filewise vc-rcs conf-mode ledger-config ledger-mode ledger-check
ledger-texi ledger-test ledger-sort ledger-report ledger-reconcile
ledger-occur ledger-fonts ledger-fontify ledger-state ledger-complete
ledger-schedule ledger-init ledger-xact ledger-post ledger-exec
ledger-navigate eshell esh-cmd esh-ext esh-opt esh-proc esh-io esh-arg
esh-module esh-groups esh-util ledger-context ledger-commodities
ledger-regex rx bug-reference naquadah-theme solar cal-dst holidays
hol-loaddefs tv-utils yaml-mode undo-tree diff rainbow-mode color
psession frameset log-view pcvs-util pcmpl-git cl-indent ffap thingatpt
autocrypt-message message rmc puny rfc822 mml mml-sec mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
autocrypt-gnus gnus nnheader gnus-util rmail rmail-loaddefs rfc2047
rfc2045 text-property-search mail-utils mm-util mail-prsvr
autocrypt-mu4e autocrypt ietf-drums config-w3m git-gutter mule-util appt
diary-lib diary-loaddefs gud pcomplete-extension pcmpl-unix pcmpl-gnu
iterator pcase wdired dired-extension org-config ob-gnuplot org-crypt
net-utils time all-the-icons all-the-icons-faces data-material
data-weathericons data-octicons data-fileicons data-faicons
data-alltheicons winner autotest-mode autoconf-mode paren woman man
ediff ediff-merg ediff-mult ediff-wind ediff-diff ediff-help ediff-init
ediff-util init-helm helm-ls-git vc-git diff-mode vc vc-dispatcher
helm-fd epa derived epg epg-config helm-epa helm-misc helm-imenu imenu
helm-elisp-package helm-find helm-org org ob ob-tangle ob-ref ob-lob
ob-table ob-exp org-macro org-footnote org-src ob-comint org-pcomplete
org-list org-faces org-entities noutline outline org-version
ob-emacs-lisp ob-core ob-eval org-table ol org-keys org-compat advice
org-macs org-loaddefs cal-menu calendar cal-loaddefs helm-external
helm-net xml url url-proxy url-privacy url-expand url-methods
url-history url-cookie url-domsuf url-util mailcap isearch-light
helm-descbinds cus-edit wid-edit helm-ipython helm-elisp helm-eval
edebug backtrace find-func helm-info python tramp-sh helm-adaptive
helm-mode helm-files filenotify tramp tramp-loaddefs trampver
tramp-integration files-x tramp-compat shell pcomplete parse-time
iso8601 time-date ls-lisp helm-buffers helm-occur helm-tags helm-locate
helm-grep wgrep-helm wgrep grep compile comint ansi-color ring
helm-regexp format-spec helm-utils helm-help helm-types
helm-extensions-autoloads helm-config helm-autoloads helm async-bytecomp
helm-global-bindings helm-easymenu helm-source helm-multi-match helm-lib
dired-async dired-aux dired dired-loaddefs async popup diminish cl-extra
help-mode mb-depth server edmacro kmacro avoid cus-start cus-load
use-package use-package-ensure use-package-delight use-package-diminish
use-package-bind-key bind-key easy-mmode use-package-core info w3m-load
package easymenu browse-url url-handlers url-parse auth-source cl-seq
eieio eieio-core cl-macs eieio-loaddefs password-cache json subr-x map
url-vars seq byte-opt gv bytecomp byte-compile cconv cl-loaddefs cl-lib
tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type
mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode elisp-mode
lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch
timer select scroll-bar mouse jit-lock font-lock syntax facemenu
font-core term/tty-colors frame minibuffer cl-generic cham georgian
utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european
ethiopic indian cyrillic chinese composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote threads inotify lcms2
dynamic-setting font-render-setting cairo move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)

Memory information:
((conses 16 453504 131281)
 (symbols 48 36164 19)
 (strings 32 137667 18976)
 (string-bytes 1 4458057)
 (vectors 16 62701)
 (vector-slots 8 1124931 144556)
 (floats 8 1525 567)
 (intervals 56 5485 1151)
 (buffers 1000 94))
<#secure method=pgpmime mode=sign>

-- 
Thierry