The Intel VTune Performance
Analyzer 9.1 Update 8 for Linux* Release Notes indicate that the following operating
system / kernel are supported for RHEL 5 on IA-32 and Intel 64 bit.
Red Hat* Enterprise Linux* 5 Update 4 2.6.18-164.el5
Red Hat* Enterprise Linux* 5 Update 5 2.6.18-194.el5
VTune Performance Analyzer 9.1 required that -moi be specified when performing the callgraph analysis. In Intel VTune Amplifier XE 2011 for Linux* you perform hotspot analysis (moi is nolonger used). Child processes are followed with the -follow-child switch (Include the child processes into collection results.) which is enabled by default.
Currently there is not a side by side comparison on how to perform an activity between Intel VTune Performance Analyzer and VTune Amplifier XE, although, this is a good idea. It just has not been done.