I'm seeing a very large X process.

I have an ATI x1600 ("ATI Technologies Inc M56GL [Mobility FireGL V5200]") on a Thinkpad t60p (2007-AD1).

X typicaly uses right around 1GB of virtual memory - but xrestop shows a /total/ of 120MB in pixmaps in 61 clients - compiz has about 22MB, as does Firefox 3.0.17.

X info:

X.Org X Server 1.6.0
Release Date: 2009-2-25
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.24-23-server i686 Ubuntu
Current Operating System: Linux chubby 2.6.28-17-generic #58-Ubuntu SMP Tue Dec 1 18:57:07 UTC 2009 i686
Build Date: 09 April 2009  02:10:02AM
xorg-server 2:1.6.0-0ubuntu14 (<email address hidden>) 

Here is pmap output from /usr/bin/X only showing those entries larger than 1024KB - anon is only 33% of the total on my system:

Address   Kbytes     RSS    Anon  Locked Mode   Mapping
08047000    1656       -       -       - r-x--  Xorg (deleted)
09e88000  104908       -       -       - rw---    [ anon ]
419fe000    1260       -       -       - r-x--  libcrypto.so.0.9.8 (deleted)
4710a000    1392       -       -       - r-x--  libc-2.9.so
7eb99000   12096       -       -       - rw---    [ anon ]
80930000   13692       -       -       - rw---    [ anon ]
8168f000   16384       -       -       - r--s-    [ shmid=0x2b6801f ]
82818000   27720       -       -       - rw---    [ anon ]
8433e000   12800       -       -       - rw---    [ anon ]
85171000   13224       -       -       - rw---    [ anon ]
85e6d000   11904       -       -       - rw---    [ anon ]
86db6000   12044       -       -       - rw---    [ anon ]
87e32000    6544       -       -       - rw---    [ anon ]
884a3000    8316       -       -       - rw---    [ anon ]
89871000   15144       -       -       - rw---    [ anon ]
8a887000    5432       -       -       - rw---    [ anon ]
8af7a000    1300       -       -       - rw---    [ anon ]
8b89f000    9032       -       -       - rw---    [ anon ]
8c660000    2144       -       -       - rw---    [ anon ]
8c8d8000    5572       -       -       - rw---    [ anon ]
8cf4d000    5572       -       -       - rw---    [ anon ]
8dd5b000    6612       -       -       - rw---    [ anon ]
8ea90000   14740       -       -       - rw---    [ anon ]
8fa07000    1060       -       -       - rw---    [ anon ]
90204000    6612       -       -       - rw---    [ anon ]
90a3b000    1060       -       -       - rw---    [ anon ]
90e44000   30708       -       -       - rw---    [ anon ]
92eaa000    1556       -       -       - rw---    [ anon ]
936f1000    1544       -       -       - rw---    [ anon ]
93964000    1284       -       -       - rw---    [ anon ]
93b68000   29184       -       -       - rw-s-  card0
957e8000    2048       -       -       - rw-s-  card0
959fb000  262112       -       -       - rw-s-  card0
a59f3000    2192       -       -       - r-x--  r300_dri.so
a5c38000    2048       -       -       - rw-s-  card0
a5e38000   29184       -       -       - rw-s-  card0
a7ab8000    2048       -       -       - rw-s-  card0
a7cb8000  262144       -       -       - rw-s-  resource0_wc
b7d57000    1028       -       -       - rw-s-  card0
total kB  972476       -       -       -

Hope this helps. Please let me know what else I can do.  I'd love to have X run in just 300MB at this point (though, yes, 50MB would be oh-so-nice).

Many, many thanks to anyone who can help.

/Bill