Hardware wise, this seems quite similar to many existing Tracing systems from other CPU cores. I know Arm and XTensa have offered on board trace buffers for ag

Hardware wise, this seems quite similar to many existing Tracing systems from other CPU cores. I know Arm and XTensa have offered on board trace buffers for ages so operating systems could record themselves. What's neat here is that Apple has bundled this nicely into a polished developer tool rather than one more discreet tool.