LSE is a feature specific to ARM architecture.
All ARM architectures support LSE.
LSE is supported only on ARM architectures of ARMv8-A and above.
LSE can improve all applications performance.
Only the performance of multi-threaded applications that heavily rely on atomic operations and synchronization primitives can be improved potentially.
YCSB can only support MongoDB.
YCSB supports a variety of popular data-serving systems, including Apache Cassandra, MongoDB, Redis, HBase, Amazon DynamoDB, and more. It provides a set of workload scenarios that can be customized to simulate specific application patterns and data access patterns.