Version and / or Patch Used: 3.0 Technical Preview
Developer Homepage: http://crystalmark.info
Product Homepage: http://crystalmark.info/software/CrystalDiskMark/index-e.html
Download here: http://crystaldew.info/category/software/crystaldiskmark
CrystalDiskMark is a disk benchmark software that allows us to benchmark 4K and 4K queue depths with accuracy.
* Sequential reads/writes
* Random 4KB/512KB reads/writes
* Text copy
* Change dialog design
* internationalization (i18n)
Note: Crystal Disk Mark 3.0 Technical Preview was used for these tests since it offers the ability to measure native command queuing at 4 and 32.
Here is our first set of tests using incompressible data and as expected the asynchronous IMFT flash kills performance with this data type. The 4K performance was good at 25MB/s and scaled well as the queue depth increased. The sequential performance was down quite a bit though compared to our test with compressible data.
The 4K write speed with incompressible data dropped to just below 15MB/s. That's less than the SF-1200 controlled Renice K3VLAR and the drives with Phison controllers. We'll cover this in depth at the end of the article.
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