One concern with PTWRITE is that it is somewhat "slow," at least according to this: https://community.intel.com/t5/Processors/Intel-Processor-Tr...

I wonder if this is a general issue relating to memory ordering or out-of-order execution, or whether this can be implemented more efficiently in a different extension.

Thank you for the linked article! Agreed on the huge potential for using these tools in production. The community could definitely benefit (even indirectly) by pushing for this kind of instruction set more widely.