Table 6 Performance evaluation of Powernap
Parameter(s) | Powernap |
|---|---|
Performance | Powernap gives poor performance and increase performance overhead which is not acceptable in any infrastructure. However, ideal situation in server environment never meet |
Energy efficiency | They save less amount of energy and sometime leads to energy wastage during beginning of idle periods. Powernap does not prevent such wastage of energy which is problem for existing data centers and Big data today |
Goal | Goal of Powernap is to increase energy efficiency and decrease energy consumption |
Intervals prediction | Sometime wrong selection of threshold value halts performance. Its quiet difficult to guess about next interval and about transition time |
Maintenance | Maintaince is quite difficult especially in term of setting transition time and adjusting transition time |
Complexity | Powernap is very much complex |
Cost (in terms of money) | The development and implementation of these techniques increase cost in terms of man power and in the terms of money. Chips are costly and implementation and prototype development is hard. Testing is also difficult |