amazon-web-services - 当我启动实例时，ECU单元、CPU核心和内存意味着什么

Question

当我在 EC2 上启动实例时，它为我提供了 t1.micro、m1.small、m1.large 等选项。有 vCPU、ECU、CPU 核心、内存、实例存储的比较表。这是系统的内存RAM吗？

我无法理解所有这些术语的含义，谁能给我清楚地说明这些术语的含义？

Answer 1

ECU = EC2 计算单元。更多信息请点击:http://aws.amazon.com/ec2/faqs/#What_is_an_EC2_Compute_Unit_and_why_did_you_introduce_it

Amazon EC2 uses a variety of measures to provide each instance with a consistent and predictable amount of CPU capacity. In order to make it easy for developers to compare CPU capacity between different instance types, we have defined an Amazon EC2 Compute Unit. The amount of CPU that is allocated to a particular instance is expressed in terms of these EC2 Compute Units. We use several benchmarks and tests to manage the consistency and predictability of the performance from an EC2 Compute Unit. One EC2 Compute Unit provides the equivalent CPU capacity of a 1.0-1.2 GHz 2007 Opteron or 2007 Xeon processor. This is also the equivalent to an early-2006 1.7 GHz Xeon processor referenced in our original documentation. Over time, we may add or substitute measures that go into the definition of an EC2 Compute Unit, if we find metrics that will give you a clearer picture of compute capacity.