Results of performance study of the BmnRoot software are presented. The BmnRoot software package plays crucial role in the Baryonic Matter at Nuclotron (BM@N) experiment of the NICA project. It is used for simulation and analysis of experimental data. Various approaches to performance optimization are discussed including algorithmic improvements and parallelization in simulation and reconstruction modules. Results of performance analysis are given and bottlenecks are localized. Results of efficiency and scalability studies for different approaches are also presented.