Dynamic tracing of the X server

• Dtrace is a scripted tracing facility included in Solaris 10 and later, including OpenSolaris

• Scripts specify which probes to activate and what actions to perform when they are triggered

  • Thousands of probe points in kernel and user applications, plus dynamically created probes at places like function entry and exit.
  • Applications can define their own probe points and data to make available to probe actions
  • Patch to Xorg 6.8.2 source to add Dtrace probes available at http://people.freedesktop.org/~alanc/dtrace

Notes: