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smart Grid and Cloud ComPutinG
2.4.1 Application Manager
An application manager is responsible for managing an application
locally at a cloud site and for trade-offs of the application’s performance
for savings in power consumption. Power performance trade-off pos-
sibilities include
1. Powering down a few servers and redistributing the excess
workload, created as a consequence of shutting down these
servers, onto the remaining servers
9,10
and
2. Operating each of the servers that host the application
at a lower frequency and voltage using DVFS schemes.
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Figure 2.2 shows the variation in power drawn, utiliza-
tion, and response time as t