I installed oprofile version 0.9.1; however I gt the error below. Could you please point me to the right steps to add call graph support?
opcontrol --no-vmlinux    --callgraph=2 --start
Call-graph profiling unsupported on this kernel/hardware
here is the output from cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant)
here is the output from uname -a:
uname -a
Linux hostname  2.6.9-5.ELsmp #1 SMP Fri Apr 29 12:14:36 CDT 2005 i686 athlon i386 GNU/Linux
here is the output from cat /proc/cpuinfo:
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 6
model           : 8
model name      : AMD Athlon(tm) XP 1500+
stepping        : 1
cpu MHz         : 1433.512
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
bogomips        : 2826.24