DLight

DLight is an interactive graphical observability tool that uses Oracle Solaris Dynamic Tracing (DTrace) technology. DLight runs multiple DTrace scripts in a synchronized fashion, while showing you the output graphically, to help you trace a runtime problem in an application to the root cause.

The following features were added or changed in Oracle Solaris Studio 12.3 DLight.

• A new Process Tree target enables you to profile a process and all the processes that it creates, graphically showing the following:

  • An aggregation of the microstates of all the threads of all the processes that DLight profiled with the Process Tree Target.

  • The microstate transitions in the form of a timeline for each thread of the target process and its child processes.

  • Locking statistics for the process and its children.

  • Aggregated CPU usage of all threads in all the targeted processes profiled across all the CPUs they are running on.

  • CPU-intensive areas in your program's process tree by displaying the functions in your program along with the CPU time used by the function and any functions it calls.

• The Attach target, which is used to profile a single running process, was renamed to Process target.

• The AMP target was removed.

See the Help in DLight and the Oracle Solaris Studio 12.3: DLight Tutorial for more information.