Measuring Performance Improvements in ScyllaDB 2.2

ScyllaDB 2.2 introduced notable performance enhancements over its predecessor, ScyllaDB 2.1, particularly in read and write operations. In benchmarking tests, the new version achieved a 42% reduction in 99th percentile latency for reads and an 18% increase in write throughput. These improvements were attributed to changes such as switching the row digest hash from md5 to xxHash and a new CPU controller that better manages resources during high-load scenarios, such as compactions. This performance comparison highlights ScyllaDB 2.2's ability to handle workloads more efficiently, offering smoother and more consistent performance by effectively balancing system resources.