Here are present actual charts for performance comparison of serialization libraries for Scala for the corresponding article «Scala Serialization».
The legend for tests. «Site» is a data transfer object (DTO) with different types of data (lists, enums, regular fields). «Events» are the primitive representation of this DTO for Event Sourcing (many small objects). Data sizes (1k, 2k etc.) are the corresponding size of the DTO in JSON format.
Please notice, that unlike the article, here the performance tests are performed via JMH and using 2 threads. The configuration of a hardware is Intel® Core™ i7–5600U CPU @ 2.60GHz × 4 (2 core + 2 HT) with 16 GB RAM.