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bug#61763: closed (30.0.50; Image Cache Size growth)

From: GNU bug Tracking System
Subject: bug#61763: closed (30.0.50; Image Cache Size growth)
Date: Sat, 25 Feb 2023 13:25:01 +0000

Your message dated Sat, 25 Feb 2023 15:24:10 +0200
with message-id <837cw5lvyd.fsf@gnu.org>
and subject line Re: bug#61763: 30.0.50; Image Cache Size growth
has caused the debbugs.gnu.org bug report #61763,
regarding 30.0.50; Image Cache Size growth
to be marked as done.

(If you believe you have received this mail in error, please contact

61763: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=61763
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems
--- Begin Message --- Subject: 30.0.50; Image Cache Size growth Date: Fri, 24 Feb 2023 18:00:00 +0100

My image cache size grows really quick when browsing some images from
Emacs.  My recipe:

        emacs -Q
        M-: (clear-image-cache)
        Then, I open a image in a directory with other images.
        I hit 'n' 5 times (to open next 5 images).
        Each image is a JPG of about 1.3MiB.
        Then, M-x memory-report says:
           366 MiB  Total Image Cache Size

With such growth, Emacs quickly tells me that the memory is exhausted.

In GNU Emacs 30.0.50 (build 1, x86_64-unknown-openbsd7.2, cairo version
 1.17.8) of 2023-02-24 built on computer
Repository revision: 078cff71abc7125558ed492e894aa7d1b487d9bd
Repository branch: mgi/image-dired-fix
Windowing system distributor 'The X.Org Foundation', version 11.0.12101006
System Description: OpenBSD computer 7.2 GENERIC.MP#1052 amd64

Configured using:
 'configure --prefix=/home/manuel/emacs --bindir=/home/manuel/bin
 --with-x-toolkit=no --without-sound --without-compress-install
 CPPFLAGS=-I/usr/local/include LDFLAGS=-L/usr/local/lib'

Configured features:

Important settings:
  value of $LC_ALL: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Special

Minor modes in effect:
  display-time-mode: t
  display-battery-mode: t
  server-mode: t
  shell-dirtrack-mode: t
  repeat-mode: t
  desktop-save-mode: t
  global-eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  buffer-read-only: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  button-mode: t

Load-path shadows:
/home/manuel/.emacs.d/elpa/ef-themes-0.10.0/theme-loaddefs hides 
/home/manuel/.emacs.d/elpa/transient-0.3.7/transient hides 

(shadow sort mail-extr emacsbug image-file image-converter dabbrev pulse
memory-report org-indent reveal sh-script executable texinfo
texinfo-loaddefs org-element org-persist org-id org-refile avl-tree
oc-basic ol-eww ol-rmail ol-mhe ol-irc ol-info ol-gnus nnselect
ol-docview ol-bibtex bibtex ol-bbdb ol-w3m ol-doi org-link-doi doc-view
jka-compr vc-hg conf-mode css-mode treesit smie sgml-mode facemenu eww
xdg url-queue mm-url make-mode pov-mode imenu vc-cvs vc-rcs log-view
pcvs-util vc-dir ewoc image-mode exif paredit edmacro autorevert
filenotify vc-git diff-mode vc bug-reference gnus-dired time battery
exwm-randr xcb-randr exwm-config ido exwm exwm-input xcb-keysyms xcb-xkb
exwm-manage exwm-floating xcb-cursor xcb-render exwm-layout
exwm-workspace exwm-core xcb-ewmh xcb-icccm xcb xcb-xproto xcb-types
xcb-debug kmacro server modus-operandi-theme modus-themes ytdious mingus
libmpdee reporter edebug debug backtrace transmission color calc-bin
calc-ext calc calc-loaddefs rect calc-macs w3m-load supercite regi
ebdb-message ebdb-gnus gnus-msg gnus-art mm-uu mml2015 mm-view mml-smime
smime gnutls dig gnus-sum shr pixel-fill kinsoku url-file svg dom
gnus-group gnus-undo gnus-start gnus-dbus gnus-cloud nnimap nnmail
mail-source utf7 nnoo gnus-spec gnus-int gnus-range message sendmail
yank-media puny rfc822 mml mml-sec epa epg rfc6068 epg-config mm-decode
mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums
gmm-utils mailheader gnus-win gnus nnheader gnus-util mail-utils range
mm-util mail-prsvr ebdb-mua ebdb-com crm ebdb-format ebdb mailabbrev
eieio-opt cl-extra help-mode speedbar ezimage dframe eieio-base pcase
timezone org ob ob-tangle ob-ref ob-lob ob-table ob-exp org-macro
org-src ob-comint org-pcomplete org-list org-footnote org-faces
org-entities ob-emacs-lisp ob-core ob-eval org-cycle org-table ol
org-fold org-fold-core org-keys oc org-loaddefs find-func org-version
org-compat org-macs visual-basic-mode cl web-mode derived disp-table
erlang-start smart-tabs-mode skeleton cc-mode cc-fonts cc-guess cc-menus
cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs slime-asdf grep
slime-tramp tramp rx tramp-loaddefs trampver tramp-integration cus-edit
cus-load wid-edit files-x tramp-compat shell pcomplete parse-time
iso8601 time-date ls-lisp format-spec slime-fancy slime-indentation
slime-cl-indent cl-indent slime-trace-dialog slime-fontifying-fu
slime-package-fu slime-references slime-compiler-notes-tree advice
slime-scratch slime-presentations bridge slime-macrostep macrostep
slime-mdot-fu slime-enclosing-context slime-fuzzy slime-fancy-trace
slime-fancy-inspector slime-c-p-c slime-editing-commands slime-autodoc
slime-repl slime-parse slime apropos compile text-property-search etags
fileloop generator xref project arc-mode archive-mode noutline outline
icons pp comint ansi-osc ansi-color ring hyperspec thingatpt
slime-autoloads view mule-util cal-china lunar solar cal-dst cal-bahai
cal-islam cal-hebrew holidays holiday-loaddefs vc-dispatcher vc-svn appt
diary-lib diary-loaddefs cal-menu calendar cal-loaddefs dired-aux
dired-x dired dired-loaddefs notifications dbus xml repeat easy-mmode
desktop frameset osm-autoloads rust-mode-autoloads compat-autoloads
ebdb-autoloads magit-autoloads debbugs-autoloads git-commit-autoloads
magit-section-autoloads ef-themes-autoloads with-editor-autoloads
paredit-autoloads dash-autoloads ytdious-autoloads
transmission-autoloads transient-autoloads exwm-autoloads
hyperbole-autoloads detached-autoloads info package browse-url url
url-proxy url-privacy url-expand url-methods url-history url-cookie
generate-lisp-file url-domsuf url-util mailcap url-handlers url-parse
auth-source cl-seq eieio eieio-core cl-macs password-cache json subr-x
map byte-opt gv bytecomp byte-compile url-vars cl-loaddefs cl-lib rmc
iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode 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 lisp-mode prog-mode register
page tab-bar menu-bar rfn-eshadow isearch easymenu timer select
scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors
frame minibuffer nadvice seq simple cl-generic indonesian philippine
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 emoji-zwj charscript
charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure
cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp
files window text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget keymap hashtable-print-readable backquote
threads dbusbind kqueue lcms2 dynamic-setting system-font-setting
font-render-setting cairo xinput2 x multi-tty make-network-process

Memory information:
((conses 16 725653 31835)
 (symbols 48 54284 4)
 (strings 32 174900 22384)
 (string-bytes 1 5521428)
 (vectors 16 101351)
 (vector-slots 8 2135369 211753)
 (floats 8 1008 384)
 (intervals 56 28286 106)
 (buffers 984 120))

Manuel Giraud

--- End Message ---
--- Begin Message --- Subject: Re: bug#61763: 30.0.50; Image Cache Size growth Date: Sat, 25 Feb 2023 15:24:10 +0200
> From: Manuel Giraud <manuel@ledu-giraud.fr>
> Cc: 61763@debbugs.gnu.org
> Date: Sat, 25 Feb 2023 13:19:20 +0100
> Eli Zaretskii <eliz@gnu.org> writes:
> [...]
> >> Maybe we should have parameter (maybe a custom) that limit this
> >> growth up to a certain point and then start uncaching older images.
> >> WDYT?
> >
> > We cannot uncache an image that is being displayed in some window.
> > Doing so would immediately cause a crash on the next redisplay cycle.
> > So lowering the eviction delay is the mechanism you should use,
> > assuming it helps in your use case.  Did you try that, and if you did,
> > did it help?  For how much time do you display each image before you
> > discard its buffer or delete its window?
> I've try with image-cache-eviction-delay at 30 seconds and I never
> exceed 700MiB as Image Cache and never hit a "Memory exhausted".  So
> this is solved for this use case.  Thanks for your patience Eli!

Thanks, I'm therefore closing this bug.

--- End Message ---

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