diskutime
Diskutime is a performance metric used in data storage to quantify the average time a disk subsystem spends handling an input/output I/O request. It encompasses the mechanical or electronic components required to complete an operation, including motion, rotational delay, and data transfer. The term is used in theoretical models and practical benchmarking to compare disks, arrays, and caching strategies.
Definition and units: Diskutime is typically expressed in milliseconds per operation (ms/op) or microseconds per kilobyte
Measurement and calculation: In practice, diskutime can be measured with synthetic benchmarks that simulate random or
Relation to other metrics: Diskutime is closely tied to latency and IOPS. For a given workload, higher
Applications and limitations: Diskutime helps with capacity planning, hardware comparisons, and tuning cache and RAID configurations.