In this blog we will compare the network performance of instances in OCI and AWS.
The Network is a sensitive resource in multi-tenant environments, and is usually one of the first contributors leading to diminished performance when the environment is oversubscribed.
In AWS there is a concept of Placement groups. Network performance is optimized between instances belonging to the same Placement group. But the downside of having instances in one and the same placement group is that it limits the amount of resources available for each instance. Therefore if a big cluster has to be created, there is a good chance that resource limitations for specific instance types will be reached.
In Oracle Cloud infrastructure this problem does not exist. For OCI’s flat network the concept of Placement groups is not really applicable because the whole AD is basically one large placement group in itself.