I was recently asked to investigate why Nutanix storage was not as fast as a competing solution in a PoC environment. When I looked at the output from diskspd, the data didn’t quite make sense.
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Single threaded DB performance on Nutanix HCI
tl;dr
A Nutanix cluster can persist a replicated write across two nodes in around 250 uSec which is critical for single-threaded DB write workloads. The performance compares very well with hosted cloud database instances using the same class of processor (db.r5.4xlarge in the figure below). The metrics below are for SQL insert transactions not the underlying IO.
Microsoft diskspd Part 3. Oddities and FAQ
Tips and tricks for using diskspd especially useful for those familar with tools like fio
Continue readingMicrosoft diskspd. Part 2 How to bypass NTFS Cache.
How to ensure performance testing with diskspd is stressing the underlying storage devices, not the OS filesystem.
Continue readingMicrosoft diskspd. Part 1 Preparing to test.
How to install and setup diskspd before starting your first performance tests and avoiding wrong results due to null byte issues.
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