dtrace notes

URL gives lots of interesting examples of what can be done with dtrace:
http://users.tpg.com.au/adsln4yb/dtrace.html

dtrace can examine things both in kernel space and in user space.

dtrace comes with a scripting language "D", not to be confused with the
"D programming language".

dtrace is not able to bring down a system (ostensibly), unlike the Linux
Trace Tookit, and IBM's Dynamic Probes.

Another related technology - redhat specific?  kprobes
http://info.redhat.com/a/tBCNywGAUfRoFAV1iZ2AK59txCp/redh20

Advanced dtrace:
http://blogs.sun.com/roller/resources/bmc/dtrace_tips.pdf

The dtrace pid provider:
http://blogs.sun.com/roller/resources/ahl/img0.html