That really was a cool feature of VMware (and I used to work on the vmware hypervisor briefly), although it used very different techniques and was limited to si

That really was a cool feature of VMware (and I used to work on the vmware hypervisor briefly), although it used very different techniques and was limited to single core record/replay. Microsoft TTD is based on a different technology, and captures traces of individual processes. More useful for usermode folks, less useful for kernel mode folks compared to the vmware technology.