bug#5535: 23.1.50; emacs daemon high CPU load even while ununsed

bug#5535: 23.1.50; emacs daemon high CPU load even while ununsed

[djcb]

I noted that Emacs (emacs --daemon) takes a lot of of CPU (up to 80%), even
when I am not using it. I am starting emacs --daemon from my ~/.gnomerc, which
is invoked when I start my X session.

I used strace to see what was going on:

gettimeofday({1265471350, 42334}, NULL) = 0
read(0, "", 4096)                       = 0
write(2, "Back to top level.", 18)      = 18
write(2, "\n", 1)                       = 1
poll([{fd=7, events=POLLIN}], 1, 0)     = 0 (Timeout)
gettimeofday({1265471350, 42538}, NULL) = 0
read(0, "", 4096)                       = 0
write(2, "Back to top level.", 18)      = 18
write(2, "\n", 1)                       = 1
poll([{fd=7, events=POLLIN}], 1, 0)     = 0 (Timeout)
gettimeofday({1265471350, 42736}, NULL) = 0
read(0, "", 4096)                       = 0
write(2, "Back to top level.", 18)      = 18
write(2, "\n", 1)                       = 1

[...]

and this continues at high speed. Apparently, emacs calling the lisp function
normal-top-level in lisp/startup.el many, many times.

Hope this helps tracking down the issue.

Best wishes,
Dirk.


If you would like to further debug the crash, please read the file
/usr/share/emacs/23.1.50/etc/DEBUG for instructions.


In GNU Emacs 23.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 2.18.0)
 of 2009-09-27 on crested, modified by Debian
 (emacs-snapshot package, version 1:20090909-1)
Windowing system distributor `The X.Org Foundation', version 11.0.10604000
configured using `configure  '--build' 'x86_64-linux-gnu' '--host' 'x86_64-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/23.1.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.1.50/site-lisp:/usr/share/emacs/site-lisp' '--with-x=yes' '--with-x-toolkit=gtk' 'build_alias=x86_64-linux-gnu' 'host_alias=x86_64-linux-gnu' 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g -Wl,--as-needed' 'CPPFLAGS=''

Important settings:
  value of $LC_ALL: C
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: C
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8
  default enable-multibyte-characters: t

Major mode: ELisp

Minor modes in effect:
  erc-track-mode: t
  erc-autojoin-mode: t
  tabkey2-mode: t
  show-paren-mode: t
  global-hl-line-mode: t
  shell-dirtrack-mode: t
  recentf-mode: t
  savehist-mode: t
  cua-mode: t
  icomplete-mode: t
  display-time-mode: t
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-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
  abbrev-mode: t

Recent input:
<down-mouse-1> <mouse-movement> <mouse-1> <help-echo> 
<help-echo> M-x e m a <tab> r e <tab> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> r e p o <tab> r t <tab> <return>

Recent messages:
Loading /home/djcb/.emacs.d/elpa/package.el (source)...done
Loading /home/djcb/.emacs.tmp/recentf...done
Cleaning up the recentf list...done (0 removed)
Ido mode enabled
Preparing diary...
Loading vc-svn...done
Loading vc-git...done
No diary entries for Saturday, February 6, 2010
Autoloading failed to define function linum-mode
Making completion list...

Load-path shadows:
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/home/djcb/.emacs.d/elisp/htmlize hides /usr/share/emacs-snapshot/site-lisp/emacs-goodies-el/htmlize
/home/djcb/.emacs.d/elisp/color-theme hides /usr/share/emacs-snapshot/site-lisp/emacs-goodies-el/color-theme
/home/djcb/.emacs.d/elisp/thinks hides /usr/share/emacs-snapshot/site-lisp/emacs-goodies-el/thinks
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/home/djcb/.emacs.d/elisp/quack hides /usr/share/emacs-snapshot/site-lisp/emacs-goodies-el/quack
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/usr/share/emacs-snapshot/site-lisp/semi/pgg-def hides /usr/share/emacs/23.1.50/lisp/pgg-def
/home/djcb/.emacs.d/elpa/json-1.2/json hides /usr/share/emacs/23.1.50/lisp/json
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/usr/share/emacs-snapshot/site-lisp/flim/sha1 hides /usr/share/emacs/23.1.50/lisp/sha1
/usr/share/emacs-snapshot/site-lisp/semi/pgg hides /usr/share/emacs/23.1.50/lisp/pgg
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/usr/share/emacs-snapshot/site-lisp/cedet-common/ezimage hides /usr/share/emacs/23.1.50/lisp/ezimage
/home/djcb/.emacs.d/elisp/linum hides /usr/share/emacs/23.1.50/lisp/linum
/usr/share/emacs-snapshot/site-lisp/css-mode/css-mode hides /usr/share/emacs/23.1.50/lisp/textmodes/css-mode
/usr/local/share/emacs/site-lisp/org-vm hides /usr/share/emacs/23.1.50/lisp/org/org-vm
/usr/local/share/emacs/site-lisp/org-rmail hides /usr/share/emacs/23.1.50/lisp/org/org-rmail
/usr/local/share/emacs/site-lisp/org-indent hides /usr/share/emacs/23.1.50/lisp/org/org-indent
/usr/local/share/emacs/site-lisp/org-bbdb hides /usr/share/emacs/23.1.50/lisp/org/org-bbdb
/usr/local/share/emacs/site-lisp/org-install hides /usr/share/emacs/23.1.50/lisp/org/org-install
/usr/local/share/emacs/site-lisp/org-faces hides /usr/share/emacs/23.1.50/lisp/org/org-faces
/usr/local/share/emacs/site-lisp/org-feed hides /usr/share/emacs/23.1.50/lisp/org/org-feed
/usr/local/share/emacs/site-lisp/org-gnus hides /usr/share/emacs/23.1.50/lisp/org/org-gnus
/usr/local/share/emacs/site-lisp/org-docbook hides /usr/share/emacs/23.1.50/lisp/org/org-docbook
/usr/local/share/emacs/site-lisp/org-ascii hides /usr/share/emacs/23.1.50/lisp/org/org-ascii
/usr/local/share/emacs/site-lisp/org-wl hides /usr/share/emacs/23.1.50/lisp/org/org-wl
/usr/local/share/emacs/site-lisp/org-irc hides /usr/share/emacs/23.1.50/lisp/org/org-irc
/usr/local/share/emacs/site-lisp/org-footnote hides /usr/share/emacs/23.1.50/lisp/org/org-footnote
/usr/local/share/emacs/site-lisp/org-mew hides /usr/share/emacs/23.1.50/lisp/org/org-mew
/usr/local/share/emacs/site-lisp/org-mhe hides /usr/share/emacs/23.1.50/lisp/org/org-mhe
/usr/local/share/emacs/site-lisp/org-latex hides /usr/share/emacs/23.1.50/lisp/org/org-latex
/usr/local/share/emacs/site-lisp/org-exp hides /usr/share/emacs/23.1.50/lisp/org/org-exp
/usr/local/share/emacs/site-lisp/org hides /usr/share/emacs/23.1.50/lisp/org/org
/usr/local/share/emacs/site-lisp/org-info hides /usr/share/emacs/23.1.50/lisp/org/org-info
/usr/local/share/emacs/site-lisp/org-attach hides /usr/share/emacs/23.1.50/lisp/org/org-attach
/usr/local/share/emacs/site-lisp/org-compat hides /usr/share/emacs/23.1.50/lisp/org/org-compat
/usr/local/share/emacs/site-lisp/org-archive hides /usr/share/emacs/23.1.50/lisp/org/org-archive
/usr/local/share/emacs/site-lisp/org-inlinetask hides /usr/share/emacs/23.1.50/lisp/org/org-inlinetask
/usr/local/share/emacs/site-lisp/org-mac-message hides /usr/share/emacs/23.1.50/lisp/org/org-mac-message
/usr/local/share/emacs/site-lisp/org-icalendar hides /usr/share/emacs/23.1.50/lisp/org/org-icalendar
/usr/local/share/emacs/site-lisp/org-id hides /usr/share/emacs/23.1.50/lisp/org/org-id
/usr/local/share/emacs/site-lisp/org-list hides /usr/share/emacs/23.1.50/lisp/org/org-list
/usr/local/share/emacs/site-lisp/org-protocol hides /usr/share/emacs/23.1.50/lisp/org/org-protocol
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/usr/local/share/emacs/site-lisp/org-jsinfo hides /usr/share/emacs/23.1.50/lisp/org/org-jsinfo
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bug#5535: 23.1.50; emacs daemon high CPU load even while ununsed

[Dan Nicolaescu]

djcb@djcbsoftware.nl writes:

  > I noted that Emacs (emacs --daemon) takes a lot of of CPU (up to 80%), even
  > when I am not using it. I am starting emacs --daemon from my ~/.gnomerc, which
  > is invoked when I start my X session.
  > 
  > I used strace to see what was going on:
  > 
  > gettimeofday({1265471350, 42334}, NULL) = 0
  > read(0, "", 4096)                       = 0
  > write(2, "Back to top level.", 18)      = 18
  > write(2, "\n", 1)                       = 1
  > poll([{fd=7, events=POLLIN}], 1, 0)     = 0 (Timeout)
  > gettimeofday({1265471350, 42538}, NULL) = 0
  > read(0, "", 4096)                       = 0
  > write(2, "Back to top level.", 18)      = 18
  > write(2, "\n", 1)                       = 1
  > poll([{fd=7, events=POLLIN}], 1, 0)     = 0 (Timeout)
  > gettimeofday({1265471350, 42736}, NULL) = 0
  > read(0, "", 4096)                       = 0
  > write(2, "Back to top level.", 18)      = 18
  > write(2, "\n", 1)                       = 1
  > 
  > [...]
  > 
  > and this continues at high speed. Apparently, emacs calling the lisp function
  > normal-top-level in lisp/startup.el many, many times.
  
  > Hope this helps tracking down the issue.

Did you have X11 emacs frames and kill the frames, or kill X11?
If yes, then it's probably a long time bug in Gtk+ that causes this.
http://bugzilla.gnome.org/show_bug.cgi?id=85715

  > Best wishes,
  > Dirk.
  > 
  > 
  > If you would like to further debug the crash, please read the file
  > /usr/share/emacs/23.1.50/etc/DEBUG for instructions.
  > 
  > 
  > In GNU Emacs 23.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 2.18.0)
  >  of 2009-09-27 on crested, modified by Debian
  >  (emacs-snapshot package, version 1:20090909-1)

This is an old snapshot, you might want to try a newer version.

bug#5535: 23.1.50; emacs daemon high CPU load even while ununsed

[Dirk-Jan C. Binnema]

Hi Dan,

>>>>> "Dan" == Dan Nicolaescu <dann@ics.uci.edu> writes:

    Dan> djcb@djcbsoftware.nl writes:
    >> I noted that Emacs (emacs --daemon) takes a lot of of CPU (up to 80%), even
    >> when I am not using it. I am starting emacs --daemon from my ~/.gnomerc, which
    >> is invoked when I start my X session.
    >> 
    >> I used strace to see what was going on:
    >> 
    >> gettimeofday({1265471350, 42334}, NULL) = 0
    >> read(0, "", 4096)                       = 0
    >> write(2, "Back to top level.", 18)      = 18
    >> write(2, "\n", 1)                       = 1
    >> poll([{fd=7, events=POLLIN}], 1, 0)     = 0 (Timeout)
    >> gettimeofday({1265471350, 42538}, NULL) = 0
    >> read(0, "", 4096)                       = 0
    >> write(2, "Back to top level.", 18)      = 18
    >> write(2, "\n", 1)                       = 1
    >> poll([{fd=7, events=POLLIN}], 1, 0)     = 0 (Timeout)
    >> gettimeofday({1265471350, 42736}, NULL) = 0
    >> read(0, "", 4096)                       = 0
    >> write(2, "Back to top level.", 18)      = 18
    >> write(2, "\n", 1)                       = 1
    >> 
    >> [...]
    >> 
    >> and this continues at high speed. Apparently, emacs calling the lisp function
    >> normal-top-level in lisp/startup.el many, many times.
  
    >> Hope this helps tracking down the issue.

    Dan> Did you have X11 emacs frames and kill the frames, or kill X11?
    Dan> If yes, then it's probably a long time bug in Gtk+ that causes this.
    Dan> http://bugzilla.gnome.org/show_bug.cgi?id=85715

I did not open any frames yet; emacs-daemon was just running in the
background.

I noticed that when I started cmdline manually, I got into some weird
semi-interactive state -- emacs was not visible, but it seemed as if emacs was
somehow interpreting my key strokes, and its output was only the echo area.

Anyway, I'll see if it can be reproduced with the newer snapshot (I have
upgraded now).

Thanks,
Dirk.

-- 
Dirk-Jan C. Binnema                  Helsinki, Finland
e:djcb@djcbsoftware.nl           w:www.djcbsoftware.nl
pgp: D09C E664 897D 7D39 5047 A178 E96A C7A1 017D DA3C

bug#5535: 23.1.50; emacs daemon high CPU load even while ununsed

[Glenn Morris]

Re: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=5535

Do you still see this issue in the latest version of Emacs?

bug#5535: Re: bug#5535: 23.1.50; emacs daemon high CPU load even while ununsed

[Dirk-Jan C. Binnema]

Hi Glenn,

On Thu 06 Oct 2011 10:40:12 AM EEST, Glenn Morris wrote:

 > 
 > Re: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=5535
 > 
 > Do you still see this issue in the latest version of Emacs?

I think it has gotten much better (I'm using emacs 24 snapshots). The only
time I still see it sometimes is with ERC. I'll try to get some backtrace
there.

Best wishes,
Dirk.

bug#5535: 24.0.91, emacs daemon high CPU load and .xsession-errors overflow

[Sascha Wilde]

Hi *,

I'm suffering from the same problem and it is still very bad with
current builds:

- the emacs in daemon mode takes up 100% CPU
- in addition the .xsession-errors is polluted with billions of lines
  only containing "Back to top level." -- this is even worse than the
  CPU usage as it fills up the disk space with megs and gigs of useless
  messages within minutes...

Any Ideas why this is?  Dirk-Jan mentioned erc, which I'm using, too.
But basically I wonder if it wouldn't help (and might be a good idea in
general) to mute the "Back to top level." Message completely for non
interactive use?

cheers
sascha
-- 
Sascha Wilde
Hauptfunktion einer GUI ist es IMHO, die dadurch verlorene Zeit durch
einen höheren Spaß-Faktor zu kompensieren. Essentiell ein
Computerspiel.  --  Rainer Weikusat in d.c.o.u.d

bug#5535: 24.0.91, emacs daemon high CPU load and .xsession-errors overflow

[Sascha Wilde]

Sascha Wilde <wilde@sha-bang.de> wrote:

It turned out my problem was caused by an older emacs daemon process
which -- for unknown reasons -- did not cleanly terminate.  emacs-client
wasn't able to connect it any more (and spawned a new emacs deamon for
that reason) but the old daemon was still around and, for some reasons,
misbehaving in the described ways...

cheers
sascha
-- 
Sascha Wilde

Lisp is the red pill.
  -- John Fraser, comp.lang.lisp

bug#5535: 23.1.50; emacs daemon high CPU load even while ununsed

[Stefan Kangas]

djcb@djcbsoftware.nl writes:

> I noted that Emacs (emacs --daemon) takes a lot of of CPU (up to 80%), even
> when I am not using it. I am starting emacs --daemon from my ~/.gnomerc, which
> is invoked when I start my X session.

That was 10 years ago.  Is this still an issue using modern versions of
Emacs?

Best regards,
Stefan Kangas

bug#5535: 23.1.50; emacs daemon high CPU load even while ununsed

[Dirk-Jan C. Binnema]

On Friday Aug 07 2020, Stefan Kangas wrote:

> djcb@djcbsoftware.nl writes:
>
>> I noted that Emacs (emacs --daemon) takes a lot of of CPU (up to 80%), even
>> when I am not using it. I am starting emacs --daemon from my ~/.gnomerc, which
>> is invoked when I start my X session.
>
> That was 10 years ago.  Is this still an issue using modern versions of
> Emacs?
>
> Best regards,
> Stefan Kangas

Haven't seen this in a long time; feel free to close.

Kind regards,
Dirk.

--
Dirk-Jan C. Binnema                  Helsinki, Finland
e:djcb@djcbsoftware.nl           w:www.djcbsoftware.nl
gpg: 6987 9CED 1745 9375 0F14 DA98 11DD FEA9 DCC4 A036

bug#5535: 23.1.50; emacs daemon high CPU load even while ununsed

[Stefan Kangas]

"Dirk-Jan C. Binnema" <djcb@djcbsoftware.nl> writes:

> Haven't seen this in a long time; feel free to close.

Thank you for your prompt reply.

(This was merged with another bug report, where I've also asked for more
information, so I'll allow the reporter of that bug a couple of weeks to
reply before I'm closing the bug.)

Best regards,
Stefan Kangas