Worked on enhancing performance observability in the facebook/rocksdb repository by introducing a new performance statistic to the RocksDB C interface. Developed and integrated the internal_merge_point_lookup_count metric, which tracks the frequency of internal merge point lookups, providing deeper insight into database operations. This addition enables developers to monitor and diagnose performance bottlenecks more effectively, laying groundwork for targeted optimization and reliability improvements. The work involved C and C++ programming with a focus on performance optimization, ensuring the new statistic integrates seamlessly with existing instrumentation. No bugs were fixed during this period, with efforts concentrated on delivering this feature for improved diagnostics.