Table 4 Performance evaluation of Fixed time out, Predictive shutdown and Predictive wakeup
Parameter (s)/techniques | Fixed timeout | Predictive shutdown | Predictive wakeup |
|---|---|---|---|
Performance | Fixed time out gives poor performance and increase performance overhead which is not acceptable in any infrastructure | Predictive shutdown provides good performance | Predictive wakeup provides good performance |
Energy efficiency | They save less amount of energy and sometime leads to energy wastage during beginning of idle periods | Presence of these techniques increases consumption of energy during transition | Presence of these techniques increases consumption of energy during transition in repeated wake up calls |
Goal | Goal of Fixed Time Out is to increase energy efficiency and decrease energy consumption | Goal of predictive Shut Down is to increase energy efficiency and decrease energy consumption | Goal of predictive Wakeup is to increase energy efficiency and decrease energy consumption |
Intervals prediction | Sometime wrong selection of threshold value halts performance | Prediction about next transition may be not as it is as predicted | Prediction about next transition may be not as it is as predicted |
Maintaince | Maintaince is quite difficult especially in term of setting time spans and setting threshold value | It’s almost difficult to implement such system when predictions are not properly monitored; carefully designed system model is required | It’s almost difficult to implement such system when predictions are not properly monitored; carefully designed system model is required |
Complexity | Fixed Timeout are more complex even when interactions are high | Relatively easy but prediction some time misleads toward performance overhead and halt interactions | Relatively easy but prediction some time misleads toward performance overhead |
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 | The development and implementation of these techniques increase cost in terms of man power and in the terms of money | The development and implementation of these techniques increase cost in terms of man power and in the terms of money |