Sean McGrath has a great blog entry on adding DTrace probes to Python. As Sean points out, this isn't a perfect solution -- but damn is it cool! For whatever it's worth, we're currently working on infrastructure that will address many of the problems that Sean discussed; once completed, this infrastructure will allow for user-level providers to export the same semantic richness as the stable kernel-level providers like io, sched and proc. But as Sean's work shows, you can still do very interesting things even with what exists today...

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Technorati tag: DTrace