This looks like a good way to track blocking (much more proactive than the monitor window...) but what kind of performance hit will the server take? I have some blocking issues in my production server that I need to resolve but I don't want to add to the problem by running an additional process. I may be answering my own question but I guess any blocking would put more strain on the server anyway so resolving that quickly would be more essential.

Should this trace run all the time?

What about cleaning up the trace file?

Thanks - great article!