dtrace for Linux is a native port of dtrace to Linux. dtrace is a kernel and user space tracing mechanism available on Solaris, FreeBSD, and Apple Mac OS X. It entails no performance cost when it is not activated. This implementation has the same functionality as the original, allowing arbitrary kernel probes. It is provided as a kernel module, so no kernel source code changes are required. It has been tested mostly on Ubuntu 7/8 systems and is known to compile on other kernels. Both 32-bit and 64-bit kernels are supported.
