Performance in Intel IOMeter
Sequential Read & Write Patterns
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 highest speed the drive can achieve.
The numeric data can be viewed in tables. We’ll discuss graphs and diagrams.
The three leaders of the previous test confirm their results and deliver somewhat higher maximum sequential speeds than the other drives. The Samsung boasts the highest top speed at very large data chunks but it is the slowest with small data chunks. The Toshiba is effective at gluing the requests together and has the highest speed with small data blocks, but is no record-breaker with large ones. The Seagate seems to be the best overall as it shows high efficiency irrespective of the size of the data block. The HDD from Western Digital is also good overall, but its results are somewhat lower.
This time the HDD from Western Digital is the overall leader despite the problem with 4KB data chunks (this problem doesn’t show up in practical applications, but only in the synthetic benchmark). The Seagate also has good results, though. Fujitsu’s performance with small data blocks and the surprisingly low speed of the Toshiba and Samsung are the disappointments of this test.