It looks like profile_node.stp is just probing timer.profile, but in theory this could be any event that systemtap is capable of. A function in glibc, a syscal

It looks like profile_node.stp is just probing timer.profile, but in theory this could be any event that systemtap is capable of. A function in glibc, a syscall, a kernel function, a perf event on say branch misses, ... there are many many possibilities. (Might need to tweak other parts of their analysis that assume a time-based event though.)