Summary:
This is an interesting paper which tries to address the possibility and then needed mechanisms for improving the energy efficiency of networked systems by putting the end-nodes to sleep as much as possible. Many of the current networked computer systems spent much of their time in idle mode almost doing nothing, which results to vast amount of energy waste. The authors of this paper first study and analyze the traffic which an idle system typically sees in a home or office environment and further design a proxy-based architecture based on the learning from the first stage.
The first observation is that because of high frequency of idle-packets both in home and (specially) in office environments, a simple wake-on-lan (WoL) scheme will not result to much savings. After choosing the proxy method as a better candidate authors further analyze and deconstruct the broadcast/multicast/unicast traffic in both home and office settings. Different analyzed protocols can be categorized as don't-wake/don't-ignore/policy-depandant protocols in one dimenstion and ignorable/handled via mechanical responses/specialized processing in another dimension.
For example, don't-wake protocols are the ones with high traffic frequency which if end-hosts were to be woken up for each packet proxy scheme would also be as useless as WoL. Based on these categories, authors propose 4 different proxy approaches with different levels of complexity and performance gain (environment dependent) and further present a general proxy architecture for this purpose.
Comments:
I very much liked the methodology this paper used in approaching the problem. First a detailed study of the underlying interactions and then a well justified approach to proposing a solution. I definitely recommend this paper for the syllabus.
This is an interesting paper which tries to address the possibility and then needed mechanisms for improving the energy efficiency of networked systems by putting the end-nodes to sleep as much as possible. Many of the current networked computer systems spent much of their time in idle mode almost doing nothing, which results to vast amount of energy waste. The authors of this paper first study and analyze the traffic which an idle system typically sees in a home or office environment and further design a proxy-based architecture based on the learning from the first stage.
The first observation is that because of high frequency of idle-packets both in home and (specially) in office environments, a simple wake-on-lan (WoL) scheme will not result to much savings. After choosing the proxy method as a better candidate authors further analyze and deconstruct the broadcast/multicast/unicast traffic in both home and office settings. Different analyzed protocols can be categorized as don't-wake/don't-ignore/policy-depandant protocols in one dimenstion and ignorable/handled via mechanical responses/specialized processing in another dimension.
For example, don't-wake protocols are the ones with high traffic frequency which if end-hosts were to be woken up for each packet proxy scheme would also be as useless as WoL. Based on these categories, authors propose 4 different proxy approaches with different levels of complexity and performance gain (environment dependent) and further present a general proxy architecture for this purpose.
Comments:
I very much liked the methodology this paper used in approaching the problem. First a detailed study of the underlying interactions and then a well justified approach to proposing a solution. I definitely recommend this paper for the syllabus.
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