Amazon AWS® 不良发现
这是爱尔兰 EC2 实例上的 CPU 监控使用情况 (t3a.xlarge). 两件事要注意:
-该图的平均值为 40% 白色背景 (它没有达到全部 400% 处理器高度)
-最多有 46% CPU窃取 – 这是红色的部分 (这不应该在上面 2%).
总共: a maximum of 86% CPU power is GONE.
换句话说: Amazon AWS is overselling its underlying EC2 instances…
Note: 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.