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Performance in Intel IOMeter

Sequential Read & Write Patterns

From the low-level IOMark to the synthetic IOMeter. IOMeter is sending a stream of read and write requests with a request queue depth of 4. The size of the requested data block is changed each minute, so that we could see the dependence of the drive’s sequential read/write speed on the size of the data block. This test is indicative of the maximum speed the drive can achieve.

The numeric data can be viewed in tables. We’ll discuss graphs and diagrams.

IOMeter: Sequential Read results

Seagate’s drives often boast a superb speed of sequential reading, and this test session is no exception. The Seagate takes first place, notching a speed of 118MBps. The opponents are 10MBps and more behind. Interestingly, the Black model from Western Digital is somewhat slower than its Blue mate. The Samsung has a good top speed but reaches it at larger data blocks than the opponents. Moreover, it is noticeably slower with small data blocks. The WD Caviar Green is not very fast because of its reduced spindle rotation speed.

IOMeter: Sequential Write results

The Seagate is in the lead at writing, too. The Caviar Black is still somewhat slower than the Caviar Blue. The Samsung loses its speed for some reason and is no faster than the Caviar Green even with large data blocks.

 
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