Why object-based transactions?

• Synchronization abstraction matches programming abstraction

  • No false sharing due to variables incidentally colocated in same word/cache line/page. Possible deadlock!

• Matching the programming abstraction allows better compiler analysis and optimization of transactional code

  • For example, escape analysis

• Performance benefits for long-running transactions

  • Pay cloning costs up-front, then run at full-speed in own copy of the object graph

Notes: