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Amazon AWS® schlecht Entdeckung: overselling

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

Dëst ass d'CPU Iwwerwaachungsverbrauch op enger EC2 Instanz an Irland (t3a.xgrouss). Zwou Saachen ze notéieren:
-déi lénks Grafik huet eng Moyenne vun 40% vu wäissem Hannergrond (et erreecht net déi voll 400% CPU Héicht)
-déi lénks Grafik huet e Maximum vun 46% CPU klauen (wat de rouden Deel ass, 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).

Conclusioun: 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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