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Performance in Intel IOMeter: Sequential Read and Write Patterns

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

The first diagram shows the linear read speed of the testing participants. An indisputable leader here is the Seagate Momentus 7200.1 100GB (ST910021A). Its performance is a way higher than that of other hard drives starting with 8KB data blocks. The second fastest in linear reading is Seagate Momentus 5400.2 120GB (ST9120821A), which turned out slightly ahead of the Fujitsu and Hitachi Travelstar 5K100 100GB (HTS541010G9AT00) drives thanks to efficient work with small data blocks. Another testing participant, the Toshiba hard disk drive, yielded to all the rivals in terms of the maximum speed, but appeared to be the best one in reading small blocks of data (from 512 Bytes to 2KB).

By the way, this behavior seems to be a distinguishing feature of the Toshiba drives:

The remarkable thing is that Hitachi Travelstar 7K60 (HTS726060M9AT00) with 7,200rpm spindle rotation speed lost to almost all the 100GB HDDs with 5,400rpm speed. Well, we have just seen with our own eyes that higher data density is another very efficient weapon in this fight for the fastest linear reading, besides the higher spindle rotation speed.

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