Oracle Exadata System Software release 24.1.0 introduces the Exadata Storage Cache Statistics utility (ecstat), which provides real-time statistics about Exadata Smart Flash Cache.

The ecstat utility improves cache observability on each Exadata storage server and enables administrators to understand:

• What is the balance of I/O operations across the main storage and Exadata Smart Flash Cache?

• How are different types of I/O operations (small reads, large reads, small writes, and large writes) serviced in the storage server?

• What is the I/O throughput, in I/Os per second (IOPS) and megabytes per second (MB/s), handled by main storage and Exadata Smart Flash Cache?

• Is Exadata Smart Flash Cache undersized or performing acceptably?

The ecstat utility is conceptually similar to the Linux iostat utility, providing a periodic snapshot of I/O performance for each storage and cache device. Storage administrators can run ecstat on demand to understand real-time I/O performance. Additionally, Exawatcher includes ecstat output in its log files.