Multi-Thread Read and Write Patterns

During multi-threading tests we emulated the situations when there are up to 4 users working with the drive at the same time. The drive would perform both: read and write requests with 64KB data blocks within 30 seconds. The number of requests was gradually changed from 1 to 8.

We decided to refrain from building diagrams for all situations we emulated. Instead we would like to specifically dwell on those cases when the request queue depth was minimal, as this is most typical for real life.

As you can see, no matter how many users there are, the maximum performance during reading is achieved with FireWire 800 interface. The drive works much faster in this case than with the other two interfaces. Of course, FireWire 400 is more efficient for multi-threaded reading than USB 2.0.

Nothing new can be seen on the multi-threaded writing diagram. FireWire 800 interface is undoubtedly the best choice here. As for FireWire 400, it once again proved to be more efficient than USB 2.0.