bug#1504: 23.0.60; emacs daemon leaks memory

bug#1504: 23.0.60; emacs daemon leaks memory

[Markus Triska]

When I do:

   $ emacs -Q --daemon

followed by:

   $ while true; do emacsclient -t -e "(save-buffers-kill-terminal)"; done

then the daemon apparently consumes increasingly more memory.

In GNU Emacs 23.0.60.9 (i386-apple-darwin8.11.1, GTK+ Version 2.12.9)
 of 2008-11-28 on mt-computer.local
Windowing system distributor `The XFree86 Project, Inc', version 11.0.40400000
Important settings:
  value of $LC_ALL: nil
  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: en_GB.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t

bug#1504: 23.0.60; emacs daemon leaks memory

[Chong Yidong]

Could you check whether this happens with the ordinary Emacs server as
well?

bug#1504: 23.0.60; emacs daemon leaks memory

[Markus Triska]

Chong Yidong <cyd@stupidchicken.com> writes:

> Could you check whether this happens with the ordinary Emacs server as

When I do:

   $ emacs -nw -Q --eval "(server-start)"

instead of "emacs -Q --daemon" above, it also uses more and more memory.

bug#1504: 23.0.60; emacs daemon leaks memory

[Chong Yidong]

Markus Triska <markus.triska@gmx.at> writes:

> When I do:
>
>    $ emacs -nw -Q --eval "(server-start)"
>
> instead of "emacs -Q --daemon" above, it also uses more and more
> memory.

Does this memory increase persist across garbage collections?  Also,
could you check if Emacs 22 has a similar problem, or if it's new to
Emacs 23?

Thanks.

bug#1504: 23.0.60; emacs daemon leaks memory

[Markus Triska]

Chong Yidong <cyd@stupidchicken.com> writes:

> Does this memory increase persist across garbage collections?

Yes, unfortunately.

> Also, could you check if Emacs 22 has a similar problem

After trying, I found no similar problem in Emacs 22.3 so far. The test
case does not translate directly to older Emacs versions, and in all
compatible cases I tested, CVS and 22.3 performed equally well and OK.

For example, when I do "emacs -Q -nw -f server-start" and evaluate:

   (defun myedit ()
     (run-with-timer 0.1 nil 'server-edit))

   (add-hook 'after-change-major-mode-hook 'myedit)

Then

   $ while true; do emacsclient test.txt; done

does not leak memory, regardless of which version I try it with.