Experimental Results (DOMT)
n Implemented MP3 player, decoder (set of heavily
communicating objects) can execute locally or remotely
n Various performance experiments, study impact of
§ Available Bandwidth (19.2 kbps – 2 Mbps)
§ Relative CPU speed (Mobile CPU: Proxy CPU)
Ø 1:4 for laptop as client device
Ø 1:116 for Windows CE palmtop as client device
n Results:
§ 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