Sun 14 Jun 2015 10:35 - 11:00 at C123 - Mobile Systems Chair(s): Hans-J. Boehm

Dynamic voltage and frequency scaling (DVFS) is ubiquitous on mobile devices as a mechanism for saving energy. Reducing the clock frequency of a processor allows a corresponding reduction in power consumption, as does turning off idle cores. Garbage collection is a canonical example of the sort of memory-bound workload that best responds to such scaling. Here, we explore the impact of frequency scaling for garbage collection in a real mobile device running Android’s Dalvik virtual machine, which uses a concurrent collector. By controlling the frequency of the core on which the concurrent collector thread runs we can reduce power significantly. Running established multi-threaded benchmarks shows that total processor energy can be reduced up to 30%, with end-to-end performance loss of at most 10%.

Sun 14 Jun
Times are displayed in time zone: (GMT-07:00) Tijuana, Baja California change

10:10 - 11:00: Research Papers - Mobile Systems at C123
Chair(s): Hans-J. BoehmGoogle
ismm-2015-papers10:10 - 10:35
Sang-Hoon KimKorea Advanced Institute of Science and Technology, Sejun KwonSungkyunkwan University, Jin-Soo KimSungkyunkwan University, Jinkyu JeongSungkyunkwan University
Link to publication
ismm-2015-papers10:35 - 11:00
Ahmed HusseinPurdue University, Tony HoskingPurdue University, Mathias PayerPurdue University, Christopher A. VickQualcomm
Link to publication