Performance in Intel IOMeter: Sequential Read & Write Patterns

The low-level Intel IOMeter benchmark was used to test the linear read and write speed of the drive. During the test session there is a stream of read/write requests sent to the drive with the queue depth=4. The data block size changes every minute. As a result we can see the dependence of the linear read/write speed on the data block size.

You can see very clearly on the diagram that Passport drive is falling behind its opponent quite noticeably throughout the entire test. This lag is the biggest when the drive works with small data blocks.

On the next graph you see the results obtained for liner write speed. Again we see that WD Passport falls behind Lacie solution all the time, independent of the data block size. Both drives demonstrate the closest results when the data block size varies from 64 to 1024KB.