Oracle Solaris DTrace is a dynamic tracing framework for troubleshooting systemic problems in real time on production systems. DTrace is designed to quickly identify the root cause of system performance problems. DTrace safely and dynamically instruments the running operating system (OS) kernel and running applications without rebooting the kernel and recompiling - or even restarting - applications. Furthermore, when not explicitly enabled, DTrace has zero effect on the system. DTrace is available on all supported Oracle Solaris platforms.