Thomas Kunz
Dept. of Systems and Computer Engineering
23
Experimental Results (DOMT)
nImplemented MP3 player, decoder (set of heavily communicating objects) can execute locally or
remotely
nVarious performance experiments, study impact of
§Available Bandwidth (19.2 kbps – 2 Mbps)
§Relative CPU speed (Mobile CPU: Proxy CPU)
Ø1:4 for laptop as
client device
Ø1:116 for Windows
CE palmtop as client device
nResults:
§for high bandwidth and slow client, offloading decoder to proxy
can speed up application performance by a factor of 20 and
reduce power consumption by 95%
§For faster
client devices, independent of bandwidth, no benefit (actually worse performance) when decoding sound samples
in access network