GNU bug report logs - #43406
Helm 3.6.5 on Emacs 27.1 leaks memory

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Package: guix; Severity: serious; Reported by: Ludovic Courtès <ludo@HIDDEN>; Done: Ludovic Courtès <ludo@HIDDEN>; Maintainer for guix is bug-guix@HIDDEN.

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Hello!

Joshua Branson <jbranso@HIDDEN> skribis:

> I do think it has to do with helm.  I can confirm that disabling
> helm-ff-cache with (setq helm-ff-keep-cached-candidates nil) really did
> the trick.

Same here.  A couple of days later, I can confirm that my Emacs has
become sane again.

Closing!

Ludo=E2=80=99.




Notification sent to Ludovic Courtès <ludo@HIDDEN>:
bug acknowledged by developer. Full text available.
Reply sent to Ludovic Courtès <ludo@HIDDEN>:
You have taken responsibility. Full text available.
Changed bug title to 'Helm 3.6.5 on Emacs 27.1 leaks memory' from 'Emacs 27.1 memory consumption grows indefinitely' Request was from Ludovic Courtès <ludo@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

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Subject: Emacs 27.1 memory consumption grows indefinitely
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 Content preview:  Please don't use "memory profile" as any indication of the
 Emacs memory usage: it is entirely unrelated to memory. The Emacs profiler
 only profiles CPU usage. It samples the PC register using a special signal
 (SIGPROF), which is the usual method of sampling CPU in profilers. For those
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Please don't use "memory profile" as any indication of the Emacs memory usage: it is entirely unrelated to memory.

The Emacs profiler only profiles CPU usage.  It samples the PC register using a special signal (SIGPROF), which is the usual method of sampling CPU in profilers.  For those systems which don't have SIGPROF, it can fall back on sampling the CPU whenever Emacs calls one of the memory allocation functions -- this is called "mem" profiling.

So the "memory" profiles shown here don't show memory usage.






Information forwarded to bug-guix@HIDDEN:
bug#43406; Package guix. Full text available.

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From: Pierre Neidhardt <mail@HIDDEN>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Subject: Re: bug#43406: Emacs 27.1 memory consumption grows indefinitely
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I don't use Gnus, sorry.
Can you reproduce on a vanilla configuration (emacs -Q)?

=2D-=20
Pierre Neidhardt
https://ambrevar.xyz/

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Information forwarded to bug-guix@HIDDEN:
bug#43406; Package guix. Full text available.

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Subject: Re: bug#43406: Emacs 27.1 memory consumption grows indefinitely
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Hi!

Pierre Neidhardt <mail@HIDDEN> skribis:

> I believe believe helm-ff cache came with Helm 3.6.4.
>
> I find it slow (and not so useful?) so I've disabled it with:
>
> (setq helm-ff-keep-cached-candidates nil)

Michael Rohleder <mike@HIDDEN> skribis:

> What helped me was disabling it with:
> (setq helm-ff-keep-cached-candidates nil)

I definitely helps, thanks!

I seem to have something else leaking still, but this time it=E2=80=99s
primarily Gnus and/or EIEIO:

--8<---------------cut here---------------start------------->8---
- command-execute                                       1,117,368,135  88%
 - call-interactively                                   1,117,276,295  88%
  - funcall-interactively                               1,116,838,121  88%
   - gnus-group-save-newsrc                               460,241,156  36%
    - gnus-save-newsrc-file                               460,241,156  36%
     - gnus-run-hooks                                     429,283,350  34%
      - apply                                             429,283,350  34%
       - run-hooks                                        429,283,350  34%
        - gnus-registry-save                              429,283,350  34%
         - eieio-persistent-save                          427,938,700  33%
          - apply                                         427,938,700  33%
           + #<compiled 0x6005bf1>                        427,938,700  33%
         + gnus-registry--munge-group-names                 1,340,064   0%
         + gnus-message                                         3,530   0%
     + gnus-gnus-to-quick-newsrc-format                    20,126,054   1%
     + save-buffer                                          9,613,098   0%
     + gnus-agent-save-local                                  595,652   0%
     + gnus-gnus-to-newsrc-format                             577,848   0%
     + gnus-group-set-mode-line                                 6,458   0%
     + gnus-message                                             3,736   0%
     + gnus-dribble-delete-file                                 3,352   0%
       gnus-get-buffer-create                                   2,138   0%
     + gnus-prune-buffers                                       1,056   0%
   - gnus-topic-read-group                                208,616,775  16%
    - gnus-group-read-group                               208,616,775  16%
     - gnus-summary-read-group                            208,616,775  16%
      - gnus-summary-read-group-1                         208,616,775  16%
       - gnus-run-hooks                                   163,821,469  13%
        - apply                                           163,821,469  13%
         - run-hooks                                      163,821,469  13%
          - spam-find-spam                                162,365,376  12%
           - mapcar                                       162,328,432  12%
            + #<compiled 0x86338dd>                       162,328,432  12%
           + gnus-parameter-spam-autodetect                    35,888   0%
           + gnus-parameter-spam-autodetect-methods             1,056   0%
          + gnus-apply-kill-file                            1,456,093   0%
       + gnus-select-newsgroup                             31,456,212   2%
--8<---------------cut here---------------end--------------->8---

Any cache to turn off?  :-)

Ludo=E2=80=99.




Information forwarded to bug-guix@HIDDEN:
bug#43406; Package guix. Full text available.
Severity set to 'serious' from 'normal' Request was from Ludovic Courtès <ludo@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

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From: Pierre Neidhardt <mail@HIDDEN>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>, 43406 <at> debbugs.gnu.org
Subject: Re: bug#43406: Emacs 27.1 memory consumption grows indefinitely
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I believe believe helm-ff cache came with Helm 3.6.4.

I find it slow (and not so useful?) so I've disabled it with:

(setq helm-ff-keep-cached-candidates nil)

Hope that helps!

=2D-=20
Pierre Neidhardt
https://ambrevar.xyz/

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From: Michael Rohleder <mike@HIDDEN>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Subject: Re: bug#43406: Emacs 27.1 memory consumption grows indefinitely
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Hi Ludovic,

I also had trouble with that helm caching. I had the impression that it
was because of newer helm versions not emacs versions.

What helped me was disabling it with:
(setq helm-ff-keep-cached-candidates nil)

=2D-=20
Alles flie=C3=9Ft, nichts bleibt.
     Heraklit

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bug#43406; Package guix. Full text available.

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Subject: Re: bug#43406: Emacs 27.1 memory consumption grows indefinitely
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Date: Tue, 15 Sep 2020 16:21:17 +0200
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More precisely:

--8<---------------cut here---------------start------------->8---
- timer-event-handler                                     805,671,418  87%
 - apply                                                  804,987,874  87%
  - helm-ff--cache-mode-refresh                           802,103,698  86%
   - helm-ff--cache-mode-refresh-1                        801,321,290  86%
    - helm-ff-refresh-cache                               801,237,818  86%
     - maphash                                            801,237,818  86%
      + #<compiled 0xec7961>                              801,237,818  86%
      helm-ff--cache-mode-max-idle-time                         6,384   0%
   + run-with-idle-timer                                      651,464   0%
--8<---------------cut here---------------end--------------->8---




Information forwarded to bug-guix@HIDDEN:
bug#43406; Package guix. Full text available.

Message received at 43406 <at> debbugs.gnu.org:


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To: 43406 <at> debbugs.gnu.org
Subject: Re: bug#43406: Emacs 27.1 memory consumption grows indefinitely
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Date: Tue, 15 Sep 2020 16:19:55 +0200
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Hi!

Ludovic Court=C3=A8s <ludo@HIDDEN> skribis:

> Since I upgraded to Emacs 27.1, its memory consumption grows without
> bounds, to the point that it gets OOM-killed after just a couple of
> hours (meaning that it=E2=80=99s used most of the 16G of RAM of my laptop=
!).
>
> Does that ring a bell to anyone?  I have 50+ ^emacs- packages in my
> profile; any clues on what could be the cause before diving further?
>
> $ guix package -I ^emacs$
> emacs   27.1    out     /gnu/store/ipgb6s3phz3n740xlcdzaxnbgvncdh11-emacs=
-27.1
> $ guix describe
> Generacio 157   Sep 10 2020 08:49:21    (nuna)
>   guix 7090159
>     repository URL: https://git.savannah.gnu.org/git/guix.git
>     branch: master
>     commit: 7090159c23d6345992ab976d71fefeb1583cfcdf

Emacs is about to crash :-), so let me share this finding from
M-x profiler-report (mem) on a sample of a few minutes:

--8<---------------cut here---------------start------------->8---
- timer-event-handler                                     805,671,418  87%
 - apply                                                  804,987,874  87%
  + helm-ff--cache-mode-refresh                           802,103,698  86%
  + emms-playing-time-display                               1,349,461   0%
  + battery-update-handler                                  1,109,005   0%
  + #<compiled 0x1ff1153b5547>                                221,094   0%
  + #<compiled 0x1ff11537c089>                                 49,632   0%
  + blink-cursor-start                                         30,368   0%
  + auto-revert-buffers                                        29,480   0%
  + highlight-symbol-temp-highlight                            22,076   0%
  + mouse-avoidance-fancy                                      20,440   0%
  + display-time-event-handler                                 18,383   0%
  + show-paren-function                                        13,464   0%
  + erc-server-send-ping                                        7,500   0%
    jit-lock-force-redisplay                                    4,136   0%
  + blink-cursor-timer-function                                 4,136   0%
  + nnimap-keepalive                                            2,400   0%
  + gnus-demon-run-callback                                     1,545   0%
  + isearch-lazy-highlight-start                                1,056   0%
 + timer-activate                                             306,016   0%
 + timer-inc-time                                             191,264   0%
 + timer-activate-when-idle                                    92,928   0%
+ command-execute                                         100,936,674  10%
+ erc-server-filter-function                                5,178,272   0%
+ redisplay_internal (C function)                           4,988,306   0%
--8<---------------cut here---------------end--------------->8---

It=E2=80=99s Helm eating memory at each timer tick.  That=E2=80=99s with:

--8<---------------cut here---------------start------------->8---
emacs-helm-wikipedia	0.0.0-1.126f044	out	/gnu/store/iy08rcx4hbravm9k3qlinc4=
wvklp3pqi-emacs-helm-wikipedia-0.0.0-1.126f044
emacs-helm-swoop	3.0.0	out	/gnu/store/qnr6asnk0b360ilx8cnrp35kwrh4fsf7-emac=
s-helm-swoop-3.0.0
emacs-helm-shell-history	0.1-1.110d3c3	out	/gnu/store/ljgfa72mw8jx6br9khl7i=
dcmrw4i33hc-emacs-helm-shell-history-0.1-1.110d3c3
emacs-helm-make	0.1.0-1.feae8df	out	/gnu/store/lnizl47zxlj03waficpy7fvfrx1m=
dqn7-emacs-helm-make-0.1.0-1.feae8df
emacs-helm-ls-git	1.9.1-1.76654c7	out	/gnu/store/897fkkh4bzpvbd06kf7vxr53hg=
kk0vfs-emacs-helm-ls-git-1.9.1-1.76654c7
emacs-helm-gtags	1.5.7	out	/gnu/store/lhibi05hvvn3zglcx2ii44yw723pfyja-emac=
s-helm-gtags-1.5.7
emacs-helm	3.6.5	out	/gnu/store/ka9lph0hpzaky0sa52zf09469apkhb68-emacs-helm=
-3.6.5
emacs-helm-system-packages	1.10.1-1.6572340	out	/gnu/store/lvkan5dsbcdkvl3y=
1fjmsgb423nzmmqc-emacs-helm-system-packages-1.10.1-1.6572340
emacs-helm-emms	1.3-3.37e5aa0	out	/gnu/store/g06lnxvyqnp9d2yqgfanp69350f7m2=
yp-emacs-helm-emms-1.3-3.37e5aa0
--8<---------------cut here---------------end--------------->8---

Cc=E2=80=99ing a couple of people who I think use Helm and hopefully have
valuable advice to share.  :-)

Ludo=E2=80=99.




Information forwarded to bug-guix@HIDDEN:
bug#43406; Package guix. Full text available.

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From: zimoun <zimon.toutoune@HIDDEN>
Date: Tue, 15 Sep 2020 00:11:54 +0200
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Subject: Re: bug#43406: Emacs 27.1 memory consumption grows indefinitely
To: Ricardo Wurmus <rekado@HIDDEN>
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> > emacs   27.1    out     /gnu/store/ipgb6s3phz3n740xlcdzaxnbgvncdh11-emacs-27.1

With the exact store item, M-x emacs-uptime says "3 days, 3 hours, 4
minutes, 7 seconds".
My kernel is 4.19.0-10 from Debian.

I use these packages:
            "diminish"
            "yasnippet"
            "smex"
            "counsel"
            "ivy"
            "ivy-rich"
            "magit"
            "debbugs"
            "ag"
            "org"
            "org-contrib"
            "flycheck"
            "auctex"
            "auto-dictionary-mode"
            "ox-pandoc"
            "pandoc-mode"
            "htmlize"
            "org-re-reveal"
            "typo"
            "pdf-tools"
            "paredit"
            "geiser"
            "guix"
            ;; "ess"
            "julia-mode"
            "pyvenv"
            "haskell-mode"
            "tuareg"
            "rust-mode"
            "lua-mode"
            "markdown-mode"
            "google-c-style"
            "graphviz-dot-mode"
            "skewer-mode"
            "ws-butler"
            "fill-column-indicator"
            "page-break-lines"
            "info-plus"
            "keyfreq"
in addition to the ones in core, in case it helps.

Cheers,
simon




Information forwarded to bug-guix@HIDDEN:
bug#43406; Package guix. Full text available.

Message received at 43406 <at> debbugs.gnu.org:


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From: Ricardo Wurmus <rekado@HIDDEN>
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Subject: Re: bug#43406: Emacs 27.1 memory consumption grows indefinitely
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Ludovic Court=C3=A8s <ludo@HIDDEN> writes:

> Since I upgraded to Emacs 27.1, its memory consumption grows without
> bounds, to the point that it gets OOM-killed after just a couple of
> hours (meaning that it=E2=80=99s used most of the 16G of RAM of my laptop=
!).
[=E2=80=A6]
> $ guix package -I ^emacs$
> emacs   27.1    out     /gnu/store/ipgb6s3phz3n740xlcdzaxnbgvncdh11-emacs=
-27.1

I have not observed this with /gnu/store/0v2r0d9gwbks7gmg5rygjb9mpb8i1bhl-e=
macs-27.1

(emacs-uptime) says "5 days, 11 hours, 38 minutes, 57 seconds"

--=20
Ricardo




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bug#43406; Package guix. Full text available.

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Ludovic Court=C3=A8s <ludo@HIDDEN> writes:

> Since I upgraded to Emacs 27.1, its memory consumption grows without
> bounds, to the point that it gets OOM-killed after just a couple of
> hours (meaning that it=E2=80=99s used most of the 16G of RAM of my laptop=
!).
[=E2=80=A6]
> $ guix package -I ^emacs$
> emacs   27.1    out     /gnu/store/ipgb6s3phz3n740xlcdzaxnbgvncdh11-emacs=
-27.1

I have not observed this with /gnu/store/0v2r0d9gwbks7gmg5rygjb9mpb8i1bhl-e=
macs-27.1

(emacs-uptime) says "5 days, 11 hours, 38 minutes, 57 seconds"

--=20
Ricardo




Information forwarded to bug-guix@HIDDEN:
bug#43406; Package guix. Full text available.

Message received at 43406 <at> debbugs.gnu.org:


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To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>, 43406 <at> debbugs.gnu.org
Subject: Re: bug#43406: Emacs 27.1 memory consumption grows indefinitely
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Hi Ludovic,

Ludovic Court=C3=A8s <ludo@HIDDEN> writes:

> Since I upgraded to Emacs 27.1, its memory consumption grows without
> bounds, to the point that it gets OOM-killed after just a couple of
> hours (meaning that it=E2=80=99s used most of the 16G of RAM of my laptop=
!).
>
> Does that ring a bell to anyone?  I have 50+ ^emacs- packages in my
> profile; any clues on what could be the cause before diving further?

Here's another data point: although I haven't paid attention to the
memory consumption of Emacs 27.1, I've used it successfully for at least
10 hours at a time (probably more) on my X200 with only 4G of RAM.  I
use 'emacs-no-x-toolkit' with only a few emacs packages:

  emacs-no-x-toolkit
  emacs-paredit
  emacs-magit
  emacs-geiser
  emacs-org-caldav
  emacs-nov-el
  notmuch

I haven't actually used 'emacs-org-caldav' or 'emacs-nov-el' recently.
Paredit, Geiser, Magit, and Notmuch's Emacs mail client are the only
out-of-tree Emacs packages that I actively use.

     Mark  (boring Emacs user :)




Information forwarded to bug-guix@HIDDEN:
bug#43406; Package guix. Full text available.

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From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN>
To: <bug-guix@HIDDEN>
Subject: Emacs 27.1 memory consumption grows indefinitely
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Hello,

Since I upgraded to Emacs 27.1, its memory consumption grows without
bounds, to the point that it gets OOM-killed after just a couple of
hours (meaning that it=E2=80=99s used most of the 16G of RAM of my laptop!).

Does that ring a bell to anyone?  I have 50+ ^emacs- packages in my
profile; any clues on what could be the cause before diving further?

--8<---------------cut here---------------start------------->8---
$ guix package -I ^emacs$
emacs   27.1    out     /gnu/store/ipgb6s3phz3n740xlcdzaxnbgvncdh11-emacs-2=
7.1
$ guix describe
Generacio 157   Sep 10 2020 08:49:21    (nuna)
  guix 7090159
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: 7090159c23d6345992ab976d71fefeb1583cfcdf
$ uname -rm
5.8.8-gnu x86_64
--8<---------------cut here---------------end--------------->8---

Ludo=E2=80=99.




Acknowledgement sent to Ludovic Courtès <ludo@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#43406; Package guix. Full text available.
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