I have a service deployed on AWS and use CodeGuru to analyze the performance. I have found when high concurrency >20TPS, JyAttribute.getAttr makes CPU in 95% of BLOCKED time. There was an issue in 2016, but I do not think it got resolved completely as there is still a Synchronized(ob) https://bugs.jython.org/issue2452.

This brought a huge latency impact due to synchronized. I am looking for a way to improve the performance during high-concurrency to avoid this kinds of lock. Thanks.