Re: Extreme memory usage for gnome-panel related apps

[Brian Nitz <Brian Nitz Sun COM>]

I typically leave gnome-panel (gnome 2.20.1 on Solaris Nevada) running 
for weeks in a Sun Ray session.  The heap does appear to be growing over 
time:

pmap -x of gnome-panel process BEFORE restart of gnome-panel:

22817:  gnome-panel --sm-client-id 11819cdc28000119515176100000052150048 
--scr
Address  Kbytes     RSS    Anon  Locked Mode   Mapped File
00010000     496     488       -       - r-x--  gnome-panel
0009A000      24      24      16       - rwx--  gnome-panel
000A0000    3456    3456    1432       - rwx--    [ heap ]
00400000   12288   12288   12288       - rwx--    [ heap ]
F9280000    1312    1024       -       - r-x--  libcrypto.so.0.9.8
F93D8000     104      96       -       - rwx--  libcrypto.so.0.9.8
F93F2000       8       -       -       - rwx--  libcrypto.so.0.9.8
F9400000    5344    1640       -       - r----  icon-theme.cache
...


pmap -x of gnome-panel process AFTER restart of gnome-panel:

3024:    gnome-panel --sm-client-id 
11819cdc28000119515176100000052150048 --scr
Address  Kbytes     RSS    Anon  Locked Mode   Mapped File
00010000     496     488       -       - r-x--  gnome-panel
0009A000      24      24      24       - rwx--  gnome-panel
000A0000    1960    1960    1960       - rwx--    [ heap ]
F9400000    5344    1640       -       - r----  icon-theme.cache
F9C00000    7056    5904       -       - r----  icon-theme.cache
FA350000      16      16       -       - r-x--  libmoniker_std_2.so
FA362000       8       8       8       - rwx--  libmoniker_std_2.so
FA370000      32      32       -       - r-x--  
libstartup-notification-1.so.0.0.0
FA386000       8       8       8       - rwx--  
libstartup-notification-1.so.0.0.0
FA390000       8       8       8       - rwx--    [ anon ]
FA3A0000      88      80       -       - r-x--  libgnome-desktop-2.so.2.3.14
FA3C4000       8       8       8       - rwx--  libgnome-desktop-2.so.2.3.14
FA3D0000      16      16       -       - r-x--  libpixbufloader-png.so
FA3E2000       8       8       8       - rwx--  libpixbufloader-png.so
FA3F0000      64      16      16       - rwx--    [ anon ]
FA410000     384     192       -       - rwxs-    [ shmid=null ]
FA480000    3520    1496       -       - r----  icon-theme.cache
FA810000      32      32       -       - r-x--  libesd.so.0.2.38
...

I'll spare the details of the Anonymous memory used by all libraries in 
gnome-panel's address space, but notice that restarting gnome-panel 
reduced the heap from over 15M to about 2M when I restarted 
gnome-panel.  Occasionally I see halting behaviour in gnome-panel menus 
which may be caused by paging activity.   Did anything recently change 
in gnome-panel's memory management?    When was gslice introduced?  How 
can I disable it?   Gslice might not be necessary on Solaris since 
running with a slab allocator is as simple as setting LD_PRELOAD to 
libumem.so.



Ross Burton wrote:
> On Fri, 2007-11-30 at 10:51 +0100, Mark wrote:
>   
> > > It's only leaked 2000 bytes, you'll need to do more research on the
> > > 422000 bytes which are still reachable.
> > >       
> > how do i do that? (gonna read the "MemoryReduction" docs soon)
> >     
>
> Read the valgrind help page.
>
> Ross
>   
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