To realize dynamic load distribution method capable of realizing appropriate load distribution even when a sudden increase of accesses to a server takes place unexpectedly in a WWW system in which service requests from clients are subjected to load distribution to a plurality of servers.
The load distribution is performed on the basis of the real time load state of the servers in such a manner that a load distributing device has a means for estimating load magnitude that the service requests give to the servers from the header information of service request packets and a means for managing an estimated value in each allocated server. The load distributing device is also preliminarily provided with a load estimate table generating means for estimating a load, and the entire server system can thereby maintain high performance without allowing excessive communication and load monitoring processing take place at the time when the server system operates.
TAKEUCHI OSAMU
DAMIEN LE MOAL
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