Sleepers and workaholics: caching strategies in mobile environments
SIGMOD '94 Proceedings of the 1994 ACM SIGMOD international conference on Management of data
Empirical studies of competitve spinning for a shared-memory multiprocessor
SOSP '91 Proceedings of the thirteenth ACM symposium on Operating systems principles
Cable Modems: Cable TV Delivers the Internet
IEEE Internet Computing
Adaptive Disk Spin-down Policies for Mobile Computers
MLICS '95 Proceedings of the 2nd Symposium on Mobile and Location-Independent Computing
An empirical evaluation of virtual circuit holding time policies in IP-over-ATM networks
IEEE Journal on Selected Areas in Communications
Performing replacement in modem pools
ATEC '00 Proceedings of the annual conference on USENIX Annual Technical Conference
Why simple timeout strategies work perfectly in practice?
ICESS'04 Proceedings of the First international conference on Embedded Software and Systems
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Internet Service Providers sometimes go to great lengths to minimize dial-up connection times, in order to make the best use of limited resources. Typically they disconnect users after a fixed period of complete inactivity, such as 10-15 minutes. We propose adaptive time-out policies that take past history into account, and we evaluate some of these policies using a trace from a production environment. We find that adaptive policies can reduce cumulative connection times and average simultaneous usage by about 10-20% compared to a conservative fixed threshold, in exchange for a moderate increase in the number of disconnections that inconvenience the user.