Strange benchmark results of SSD - any ideas

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Hello,

I've done some benchmarks with FIO of entire SSD devices. So the FIO
benchmark stops when the whole device has been read/written. I've
logged latency and iops for the entire run.

Those logs are then translated to graphs. The Intel SSD shows the kind
of graph I would expect. The Samsung and Kingston SSDs show 'strange'
results.

I've written a brief blog article about this which includes links to
the raw data and the images.
https://louwrentius.com/difference-of-behavior-in-sata-solid-state-drives.html

Does anybody have an idea what could be going on? Why do we see these
'golden gate bridge' patterns? Maybe I did something wrong?

With regards,

Louwrentius



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