Closed Bug 1550738 Opened 5 years ago Closed 5 years ago

Verify HDD/SSD detection telemetry


(Core :: Performance, enhancement)

Not set





(Reporter: sefeng, Assigned: sefeng)


We landed Bug 1533861, we need to verify the data.

tldr: I did some analysis for the accuracy about the HDD/SSD data we collected and based on my testing, it's a 95% accuracy, so I am happy about the result.

The databrick note book that I used to do the analysis:, you probably can't view it because the permission, please feel free to ask me to grant you a permission.

Total HDD: 296086
Verified HDD: 280212

Total SSD: 483759
Verified SSD: 468225

I'd like to summarize how I verified the data, just for the record.

The challenge I was facing was I couldn't find enough disk information from reliable sources that could provide the model name and the disk type (HDD or SSD) because I needed these data to compare with the data we collected. I was able to get some disk models and disk types data from some disk benchmarking websites, however, it wasn't enough. There were a lot of models were missing. So I wrote a script that would do a google search for a given model, checked the search results see if it contained more SSD related terms than HDD related terms, if so it was an SSD, otherwise HDD. I didn't some smoke tests (ie, I manually googled the model name and check the disk type) to make sure this method was acceptable, and it seemed quite accurate to me.

Closed: 5 years ago
Resolution: --- → FIXED
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