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Az Amazon AWS® rossz felfedezése: Overselling

An image is worth more than words: left graph – Amazon EC2 T-family instance oversold, right graph – not oversold

Ez a CPU-figyelés egy írországi EC2-példányon (t3a.xlarge). Két dolgot érdemes észrevenni:
-a bal oldali grafikon átlaga 40% fehér háttér (nem éri el a teljes 400% CPU magasság)
-a bal oldali grafikonnak maximuma van 46% CPU lopás (ami a piros rész, and it should not be above 2%).
In total: a maximum of 86% CPU power is GONE.

For the avoidance of the doubt: the EC2 instance was stopped and started again around 6:30AM on the left graph, so the instance was running on a new hardware from 6:30AM. This has been done to also rule out any hardware or hypervisor problem (but it did not change anything).

Conclusion: it has been confirmed that Amazon AWS® is overselling its T-family instances since November 2022, confirmed again in March 2023, and in June 2024…

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