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Performance difference and selection method of ECS shared and enterprise exclusive instances of Alibaba cloud server

Aliyun server ECS It can be divided into two types: sharing type and exclusive type , Exclusive is also called Enterprise Cloud Server , The difference between sharing and exclusive is CPU Scheduling mode , Enterprise level examples use fixed CPU Scheduling mode , Shared instances are unbound CPU Scheduling mode , The computing performance of shared cloud server may be unstable during the peak period of high load business , Shared instances have no SLA Guarantee .Instancetypes Let's talk about Alibaba cloud server in detail ECS Comparison of performance differences between shared and enterprise level instances :

 Alibaba cloud server sharing and exclusive enterprise

The difference between Alibaba cloud server sharing and enterprise level

Aliyun server ECS It can be divided into two types: sharing type and exclusive type , Exclusive is what we call enterprise class instance . The main difference between sharing and exclusive alicloud servers is CPU Scheduling mode , Some students think that the public network of shared instances of Alibaba cloud server IP Is Shared , interpretive error , Alibaba cloud server, whether shared or exclusive , The public network allocated by the system IP The addresses are exclusive . The difference between sharing and exclusive is CPU Scheduling mode . Detailed as follows :

  • Enterprise level examples : Use fixed CPU Scheduling mode . Every vCPU Bound to a physical CPU hyper-threading , There is no CPU Competition for resources , The calculation performance of the example is stable and has strict SLA Guarantee .
  • Shared instances : Use unbound CPU Scheduling mode . Every vCPU Will be randomly assigned to any idle CPU On hyper thread , Different instances vCPU Will compete for Physics CPU resources , It also leads to the instability of computing performance under high load , There's availability SLA Guarantee , But no performance SLA Guarantee .

The enterprise level example is Alibaba cloud 2016 year 9 The general name of a series of instance specification families launched in May , High performance 、 Stable computing power and balanced network performance . Because it has exclusive and stable Computing 、 Storage 、 Network resources , These instance specification families are very suitable for enterprise scenarios with high requirements for business stability . Shared instance is a series of instance specifications for small and medium-sized websites or individuals ( family ) General term . Compared to enterprise level examples , Shared instances emphasize the sharing of resource performance in resource utilization , Therefore, the stability of instance computing performance cannot be guaranteed , But the cost is relatively lower .

that , Aliyun server ECS Which instances are shared and which are enterprise class ?

Cloud server ECS Shared and enterprise level instances

Currently, the shared instances on Alibaba cloud's official website are : Burst performance t6、 Burst performance t5、ECS Shared s6、n4、mn4、xn4、e4, Besides these examples , The rest are enterprise level instances .

These are Alibaba cloud servers ECS The difference between shared and enterprise , How to choose depends on the actual application , If you have high requirements for computing performance, you can choose enterprise level instances . Small websites like Alibaba cloud encyclopedia , All the choices are shared cloud servers , Such as Alibaba cloud ECS Shared s6 example , This cloud server is very popular , Don't limit CPU It's cost-effective .

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