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TSX Instructions

It's a concurrency enhancement using optimistic locks at the hardware level. It can be magical for database and certain highly threaded HPC loads. The code samples I've seen are geared towards enhancing performance of certain types of locks. Plenty of software use locks of different types, but optimization may do little to nothing to improve overall performance in many applications. TSX is useful when those locks do significantly bottleneck performance.

When TSX got yanked for a bug in Haswell, there wasn't a loud outcry due to the feature being removed. It could be useful for CC or workstation-type loads, but I doubt much desktop software will see huge improvements outside of pretty heavy loads. For example, some very complex spreadsheets may see improvements if the software has TSX ready code to enhance and/or has TSX path(s) added.
 
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