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IOMETER
Iometer is an I/O subsystem measurement and characterization tool for single and clustered systems. Iometer is pronounced “eye-OM-i-ter,” to rhyme with “thermometer.” Iometer does for a computer’s I/O subsystem what a dynamometer does for an engine: it measures performance under a controlled load. Iometer was formerly known as “Galileo.”
Iometer is both a workload generator (that is, it performs I/O operations in order to stress the system) and a measurement tool (that is, it examines and records the performance of its I/O operations and their impact on the system). It can be configured to emulate the disk or network I/O load of any program or benchmark, or can be used to generate entirely synthetic I/O loads. It can generate and measure loads on single or multiple (networked) systems.
Iometer can be used for measurement and characterization of:
- Performance of disk and network controllers.
- Bandwidth and latency capabilities of buses.
- Network throughput to attached drives.
- Shared bus performance.
- System-level hard drive performance.
- System-level network performance.
We were quite surprised (and disappointed) to see relatively weak random performance from the drive when compared with the Intel and OCZ offerings. The Indilinx controller is clearly superior in this regard. Intel's controller is still literally miles ahead. Time to check out the write performance.
Again we were less than impressed with the random write performance of the drive as it is outclassed by both Intel and OCZ drives. We would have expected more from the new controller but clearly there is still some work to be done by Toshiba. We would hope to see a firmware update in the future help resolve these issues.
