Advances, Systems and Applications
Table 2 Characteristics of adaptation techniques
From: Severity: a QoS-aware approach to cloud application elasticity
Technique | Inspired from commercial offerings | Uses individual values from multiple metrics | Dynamic resource (de)allocation | Aggressive (de) allocation of instances |
|---|---|---|---|---|
Simple threshold | ✔ | ✘ | ✘ | Very Low |
Maximum attribute control loop | ✔ | Partly | ✔ | Medium – also depends on the thresholds set |
Absolute severity value | ✘ | ✔ | ✔ | Very High |
Normalized absolute severity | ✘ | ✔ | ✔ | Medium |
Normalized absolute severity control loop | ✘ | ✔ | ✔ | Low – also depends on the thresholds set |
Simple severity zones | ✘ | ✔ | ✘ | Custom (In tests, was configured as Low) |
Relative severity zones | ✘ | ✔ | ✔ | Custom (In tests, was configured as Low) |
Severity value | ✘ | ✔ | ✔ | High |
Normalized severity value | ✘ | ✔ | ✔ | Low |