> and there wasn't much documentation about it online, so we ended up using a standard profiler to track down the issue I think you hit the nail on the head ri

> and there wasn't much documentation about it online, so we ended up using a standard profiler to track down the issue I think you hit the nail on the head right there. Also I think SystemTap requires a certain kernel version or above and some enterprise systems are still stuck at RHEL 6.5.