DTrace scripts may reject to work when you try to run very large scripts with hundreds of enablings or thousands of actions.
Error message:
dtrace: failed to enable './myDtraceProbe.d'' : DIF program exceeds maximum program size
Reason: The current default size for DTrace is 256K. This may be to small for some probes.
Solution 1: Increase the default size in file /etc/system. You will require to have root privileges.
set dtrace:dtrace_dof_maxsize=0x800000
Reboot the system after the change.
Disclaimer: Changes to the /etc/system file change the behavior of the entire system. Consult your system administrator upfront!
Solution 2: Set the parameter dynamically with mdb (Solaris Modular Debugger)
# mdb -kw Loading modules: [ ... ] > dtrace_dof_maxsize/E dtrace_dof_maxsize: dtrace_dof_maxsize: 262144 > dtrace_dof_maxsize/Z 0t524288 dtrace_dof_maxsize: 0x40000 = 0x80000 > dtrace_dof_max_size/E dtrace_dof_maxsize: dtrace_dof_maxsize: 524288
Disclaimer: Work with mdb is the equivalent to open heart surgery on your Solaris system. Any change has direct and system wide impact. Consider to use a /etc/system entry (see solution 1) and a reboot instead of.