Dtrace Invalid Probe Specifier error

Question

I installed Dtrace in Ubuntu 11.04.

I was able to run:

dtrace -n 'syscall:::'

and:

sudo dtrace -l | grep terminal

commands properly and got the results.

But when I tried to run:

dtrace -n 'proc:::exec-success { trace(curpsinfo->pr_psargs); }'

I'm getting error saying:

dtrace: invalid probe specifier proc:::exec-success { trace(curpsinfo->pr_psargs); }: probe description proc:::exec-success does not match any probes.

What is wrong here? How can I fix this?

Answer 1

Check dtrace -l to see that the proc:::exec-success probe exists. DTrace ports take on different providers at different times. An incomplete port might not yet have the proc provider.