Thomas Kunz
Systems and Computer Engineering
10
Scalability (cont)
nMany parameters deduced from traces collected from live cellular network (Bell Mobility’s MicroBrowser)
nStudy system capacity under changing load conditions, vary computational load off-loaded to proxy
nResults:
–Proxy makes
slow handsets/clients faster
–System
capacity decreases slightly
–For system
under study, application server more likely to become bottleneck than proxy
–č
single proxy server can support current client population
nCaveat: results specific for application studied, may
not generalize for more demanding
multi-medial 3rd-generation mobile applications