oprofile on Xorg HOWTO ?

[Xavier Bestel <xavier.bestel@free.fr>]

Hi,

I'm trying to run oprofile (which I don't know at all) on Xorg to find
where windows mapping is slow. I installed xserver-xorg-dbg, but
oprofile's report is still without symbols:

[xav@bip:~]$ opreport -g --symbols -p /usr/lib/debug/usr/X11R6/bin/
warning: /no-vmlinux could not be found.
CPU: AMD64 processors, speed 2009.82 MHz (estimated)
Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit mask of 0x00 (No unit mask) count 100000
samples  %        linenr info                 image name               app name                 symbol name
42313    79.4372  (no location information)   libfb.so                 libfb.so                 (no symbols)
2824      5.3017  (no location information)   libc-2.3.5.so            libc-2.3.5.so            (no symbols)
1613      3.0282  (no location information)   libmpg123.so             libmpg123.so             (no symbols)
825       1.5488  (no location information)   libglib-2.0.so.0.800.3   libglib-2.0.so.0.800.3   (no symbols)
765       1.4362  (no location information)   libasound.so.2.0.0       libasound.so.2.0.0       (no symbols)
650       1.2203  (no location information)   libgobject-2.0.so.0.800.3 libgobject-2.0.so.0.800.3 (no symbols)
626       1.1752  (no location information)   Xorg                     Xorg                     (no symbols)

As you can see, no symbols for Xorg.
Can someone tell me how to have some meaningful info on Xorg with
oprofile ?

Thanks,
	Xav