http://sourceware.org/systemtap/examples/subsystem-index.html SCHEDULER - Generating Backtraces of Threads Waiting for IO Operations - http://sourceware.org/systemtap/examples/process/sleepingBeauties.stp LOCKING - System-Wide Futex Contention - http://sourceware.org/systemtap/examples/process/futexes.stp CPU - Graphing Disk and CPU Utilization - http://sourceware.org/systemtap/examples/general/graphs.stp