Resource usage comparison evaluates your resource utilization by comparing usage data against similar users.
The following figure illustrates the computing logic of resource usage comparison. 
Similar users are identified as follows:
- If similar users exist, all data of the similar users is computed. If the Euclidean distance of the resource specifications of two users is less than 0.2, they are similar users. Otherwise, they are non-similar users. For example, User 1 has Instance A and Instance B, with Specification A and Specification B, respectively. The percentage of Instance A is 0.2 and the percentage of Instance B is 0.8. User 2 has Instance C and Instance D, with Specification A and Specification B, respectively. The percentage of Instance C is 0.6 and the percentage of Instance D is 0.4. User 3 has Instance E and Instance F, with Specification A and Specification B, respectively. The percentage of Instance E is 0.25 and the percentage of Instance F is 0.75.
- Formula: Euclidean distance =
= 0.5657, which is greater than 0.2. In this case, User 1 and User 2 are non-similar users. - Formula: Euclidean distance =
= 0.0707, which is less than 0.2. In this case, User 1 and User 3 are similar users.
- Formula: Euclidean distance =
- If no similar users exist, all data of the users is computed.