The development of CPU has made its way into the era of multicore. The current parallel simulation kernel utilizes multicore resource by a multiprocess, which leads to inefficiency in synchronization and communication. This study has optimized two services based on hierarchical parallel simulation kernel (HPSK) model to support high performance simulation in multithread paradigm. First, the paper proposes a protocol of EETS computation based on hybrid time management, which can be configured flexibly as asynchronous EETS algorithm according to application’s characteristics. Second, the study proposes an event management algorithm based on characteristics of events interaction, which can create events lock-free, commits events asynchronously, and transfers events based on pointers, to eliminate the overhead of locks and to reduce the usage of memory. Experimental results from phold show that the optimized HPSK works well on different conditions.