Power Capping Via Forced Idleness
Anshul Gandhi
Mor Harchol-Balter
Rajarshi Das
Jeffrey O. Kephart
Charles Lefurgy
10.1184/R1/6608498.v1
https://kilthub.cmu.edu/articles/journal_contribution/Power_Capping_Via_Forced_Idleness/6608498
We introduce a novel power capping technique, IdleCap,
that achieves higher effective server frequency for a given
power constraint than existing techniques. IdleCap works
by repeatedly alternating between the highest performance
state and a low-power idle state, maintaining a fixed average
power budget, while significantly increasing the average
processor frequency. In experiments conducted on
an IBM BladeCenter HS21 server across three representative
workloads, IdleCap reduces the mean response time by
up to a factor of 3 when compared to power capping using
clock-throttling. Furthermore, we argue how IdleCap applies
to next-generation servers using DVFS and advanced
idle states.
2004-07-01 00:00:00
computer sciences