GNU bug report logs - #23104
25.1.50; Emacs freezes when killing large text

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Nicolas Petton <nicolas <at> petton.fr>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.1.50; Emacs freezes when killing large text
Date: Thu, 24 Mar 2016 10:13:05 +0100

[Message part 1 (text/plain, inline)]

When killing a very large buffer of JSON data (12000 lines of JSON),
Emacs freezes.

Emacs becomes unresponsive when I kill the contents of the buffer after
I put it in fundamental-mode as well.

I won't attach the file as it is 459K, but the issue can be reproduced
with 12000 lines of the following JSON:

    [
        {
            "ACCTOUNT_NUMBER":"1234567890",
            "CUSTOMER_NAME":"ACME Products and Services, Inc.",
            "ADDRESS":"123 Main Street",
            "CITY":"Albuquerque",
            "STATE":"NM",
            "ZIP":"87101-1234"
        },
        {
            "ACCTOUNT_NUMBER":"1234567890",
            "CUSTOMER_NAME":"ACME Products and Services, Inc.",
            "ADDRESS":"123 Main Street",
            "CITY":"Albuquerque",
            "STATE":"NM",
            "ZIP":"87101-1234"
        },
        ...
    ]

This happens with the latest pretest of Emacs 25.1 as well as with Emacs
24.5, starting Emacs with "emacs -Q".



In GNU Emacs 25.1.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.18.7)
 of 2016-02-04 built on blueberry
Repository revision: 7a7164ea3eb7b3b7d2f7cfaec4ef73a90e14f735
Windowing system distributor 'Fedora Project', version 11.0.11801000
System Description:	Fedora release 23 (Twenty Three)

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

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ezimage dframe mu4e-main mu4e-view epa derived mu4e-headers mu4e-compose
mu4e-draft mu4e-actions rfc2368 smtpmail sendmail mu4e-mark mu4e-message
html2text mu4e-proc mu4e-utils doc-view jka-compr image-mode mu4e-lists
mu4e-about mu4e-vars mu4e-meta gnus-dired alert log4e notifications dbus
gntp fetch-email org-notmuch org-element avl-tree notmuch
notmuch-message notmuch-maildir-fcc notmuch-hello wid-edit notmuch-tree
notmuch-show notmuch-print notmuch-crypto notmuch-mua notmuch-address
notmuch-company notmuch-parser notmuch-wash coolj notmuch-query
goto-addr icalendar diary-lib diary-loaddefs notmuch-tag notmuch-lib
mm-view mml-smime smime dig init-packages init-diminish cap-words
superword subword diminish init-yasnippet init-ws-butler ws-butler
init-writer-mode init-whitespace whitespace init-web-mode web-mode
init-w3m init-undotree undo-tree diff init-tramp init-smalltalk
init-slime slime-asdf slime-fancy slime-trace-dialog slime-fontifying-fu
slime-package-fu slime-references slime-compiler-notes-tree
slime-scratch slime-presentations bridge 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-company slime hyperspec init-projectile
init-pass pass init-multiple-cursors multiple-cursors
mc-hide-unmatched-lines-mode mc-separate-operations
rectangular-region-mode mc-mark-pop mc-mark-more mc-cycle-cursors
mc-edit-lines init-misc zoom-frm iso-transl workflow duplicate-thing
linum hl-line repeat smartscan init-magit git-timemachine vc-git
magit-blame magit-stash magit-bisect magit-remote magit-commit
magit-sequence magit magit-apply magit-wip magit-log magit-diff
smerge-mode diff-mode magit-core magit-autorevert autorevert filenotify
magit-process magit-popup magit-mode magit-git crm magit-section
magit-utils git-commit log-edit message rfc822 mml mml-sec epg mm-decode
mm-bodies mm-encode mailabbrev mail-utils gmm-utils mailheader pcvs-util
add-log with-editor async-bytecomp async server init-lisp init-js grunt
ggtags flycheck company-tern dash-functional widgetjs-mode tern amd-mode
makey ag vc-svn find-dired projectile grep ibuf-ext ibuffer
ibuffer-loaddefs js2-refactor js2r-paredit js2r-conveniences
js2r-conditionals js2r-wrapping js2r-functions js2r-vars js2r-iife
js2r-formatting js2r-helpers js2-mode js cc-mode cc-fonts cc-guess
cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs init-ivy
ivy delsel smex ido init-flyspell flyspell init-eshell em-cmpl em-term
term disp-table ehelp em-prompt pcomplete-extension pcmpl-unix pcmpl-gnu
shell-switcher rswitcher eshellbmk esh-var esh-io esh-cmd esh-opt
esh-ext esh-proc esh-arg esh-groups eshell esh-module esh-mode esh-util
init-erc init-elisp init-ediff ediff-merg ediff-wind ediff-diff
ediff-mult ediff-help ediff-init ediff-util ediff init-drag-stuff
drag-stuff init-dired init-darwin init-css init-company init-clojure
company clj-refactor pkg-info url-http tls gnutls url-auth mail-parse
rfc2231 rfc2047 rfc2045 ietf-drums url-gw puny lisp-mnt epl hydra lv
inflections sgml-mode edn peg multiple-cursors-core rect yasnippet cl
cider tramp-sh cider-debug cider-browse-ns cider-inspector cider-mode
cider-resolve cider-interaction arc-mode archive-mode cider-overlays
cider-repl cider-test cider-stacktrace cider-doc org-table
org-location-google-maps org-agenda google-maps google-maps-static
google-maps-geocode google-maps-base org org-macro org-footnote
org-pcomplete org-list org-faces org-entities noutline outline
org-version ob-emacs-lisp ob ob-tangle ob-ref ob-lob ob-table ob-exp
org-src ob-keys ob-comint ob-core ob-eval org-compat org-macs
org-loaddefs find-func cal-menu calendar cal-loaddefs cider-grimoire
cider-popup cider-eldoc cider-client cider-common cider-util
clojure-mode align imenu nrepl-client queue ewoc etags xref project
cider-compat spinner paredit init-backups init-avy avy
init-auth-password-store auth-password-store password-store subr-x
init-apg init-appearance zerodark-theme frame-cmds frame-fns avoid
init-abbrev ispell helm-clipboard-manager helm-ring helm-elisp
helm-files rx image-dired tramp tramp-compat tramp-loaddefs trampver
shell pcomplete format-spec dired-x dired-aux ffap thingatpt
helm-buffers helm-elscreen helm-tags helm-bookmark helm-adaptive
bookmark pp helm-locate helm-grep helm-regexp helm-external helm-net
browse-url xml url url-proxy url-privacy url-expand url-methods
url-history url-cookie url-domsuf url-util mailcap helm-eval edebug
helm-info helm-plugin helm-types helm-utils compile helm-help helm
helm-source eieio-compat helm-multi-match helm-lib dired dired-loaddefs
buffer-watcher f dash s ucs-normalize noccur init-package finder-inf
tex-site advice edmacro kmacro slime-autoloads info package epg-config
url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs
eieio-loaddefs gnus-util mm-util help-fns mail-prsvr password-cache
url-vars winner gdb-mi bindat json map seq byte-opt gv bytecomp
byte-compile cconv cl-extra help-mode easymenu cl-loaddefs pcase cl-lib
gud easy-mmode comint ansi-color ring cus-start cus-load time-date
mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel x-win term/common-win x-dnd tool-bar dnd fontset
image regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame 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 charscript case-table epa-hook
jka-cmpr-hook help simple abbrev obarray minibuffer 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 dbusbind inotify dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)

Memory information:
((conses 16 930201 37462)
 (symbols 48 76847 8)
 (miscs 40 1306 4331)
 (strings 32 214698 17926)
 (string-bytes 1 6409766)
 (vectors 16 108335)
 (vector-slots 8 1577899 15800)
 (floats 8 1545 273)
 (intervals 56 17831 97)
 (buffers 976 22)
 (heap 1024 76884 4221))

[Message part 2 (text/plain, inline)]

-- 
Nicolas Petton
http://nicolas-petton.fr

[signature.asc (application/pgp-signature, inline)]

Message #8 received at 23104 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Nicolas Petton <nicolas <at> petton.fr>
Cc: 23104 <at> debbugs.gnu.org
Subject: Re: bug#23104: 25.1.50; Emacs freezes when killing large text
Date: Thu, 24 Mar 2016 17:50:46 +0200

> From: Nicolas Petton <nicolas <at> petton.fr>
> Date: Thu, 24 Mar 2016 10:13:05 +0100
> 
> When killing a very large buffer of JSON data (12000 lines of JSON),
> Emacs freezes.
> 
> Emacs becomes unresponsive when I kill the contents of the buffer after
> I put it in fundamental-mode as well.

I can't reproduce this, so it's probably at least X-related, and
perhaps also specific to your system setup.  (E.g., is there some
clipboard managing agent running that could come in the way?)

Message #15 received at 23104 <at> debbugs.gnu.org (full text, mbox):

From: Alexis <flexibeast <at> gmail.com>
To: Nicolas Petton <nicolas <at> petton.fr>
Cc: eliz <at> gnu.org, 23104 <at> debbugs.gnu.org
Subject: Re: bug#23104: 25.1.50; Emacs freezes when killing large text
Date: Mon, 11 Apr 2016 09:58:36 +1000

Nicolas Petton <nicolas <at> petton.fr> writes:

> When killing a very large buffer of JSON data (12000 lines of 
> JSON), Emacs freezes.
>
> Emacs becomes unresponsive when I kill the contents of the 
> buffer after I put it in fundamental-mode as well.
>
> I won't attach the file as it is 459K, but the issue can be 
> reproduced with 12000 lines of the following JSON:

Eli Zaretskii <eliz <at> gnu.org> writes:

> I can't reproduce this, so it's probably at least X-related, and 
> perhaps also specific to your system setup.  (E.g., is there 
> some clipboard managing agent running that could come in the 
> way?)

i can't reproduce this with master as at commit d6ea6453, running 
GUI Emacs under X on Debian Jessie x86_64.

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