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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 maximum speed the drive can achieve.

The numeric data can be viewed in tables. We will be discussing graphs and diagrams.

That’s much more illustrative than what we’ve seen in IOMark. The newer HDDs benefit from the increased recording density: the Samsung SpinPoint F4 is far ahead of its opponents, stopping very short of the 150MBps mark. Its energy-efficient 2TB cousin enjoys some speed benefits, too. Unfortunately and unexpectedly, we don’t see the same with the new Caviar Green. The Hitachi HDDs are slower than their opponents when processing small data blocks. The Samsung EcoGreen F2 is sluggish, too. It’s clear that the change of the platform has been beneficial for Samsung’s newer products.

The sequential write results are overall similar to the sequential read ones. We can easily identify HDDs with 4KB sectors here: their performance when writing 2KB and smaller data blocks is lower compared to old-style HDDs.

 
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