Re: Memory again

[emacs user]

On Fri, Dec 23, 2011 at 2:39 AM, Stefan Monnier

> The GC stats you posted indicate that the GC knows of about 27MB of data
> (10MB of which is actually unused but can't be returned to malloc due to
> fragmentation) which doesn't account for the 214MB you mention.  So it
> looks like that data is held by the C code.
>
> Of course, I don't know what the 214MB represent, if it is resident set
> size, then there really seems to be a leak, whereas if it's the total
> virtual size, it may also be an artifact of various other things.
>
>
>        Stefan

here is something which I am hoping is reproducible by others:
download
http://emacsforosx.com/emacs-builds/Emacs-2011-12-23-universal-10.6.8.dmg
save to desktop.

start emacs:
$ ~/Desktop/Emacs.app/Contents/MacOS/Emacs -Q&

create a file that contains the following line many times
asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf
$ wc t :  687456 10311840 52246656 t
$ ls -l t: -rw-------  1 x  staff  52246656 Dec 23 05:08 t

edit it using the above emacs.
kill all buffers, do M-x garbage-collect

look at the process:

 $ ps -vefl | head -1
  PID STAT      TIME  SL  RE PAGEIN      VSZ    RSS   LIM     TSIZ
%CPU %MEM COMMAND            UID  PPID   C STIME   TTY             F
PRI NI WCHAN              ADDR

before editing the file:
$ ps -vefl | grep 62764
62764 S      0:00.78   0   0      0  2571020  30852     -        0
0.3  0.7 /Users/xxx/Deskt   501 62068   0  5:38AM ttys001      4006
49  0 -      ffffff8012762000

after editing it, killing the buffer, and doing M-x garbage-collect
 $ ps -vefl | grep 62764
62764 S      0:01.85   0   0      0  2625752  83036     -        0
0.6  2.0 /Users/xxx/Deskt   501 62068   0  5:38AM ttys001      4006
48  0 -      ffffff8012762000

I am running on Lion, Macbook Air.  does this help?