On-line processing system and overload suppressing method

Claim 1

An on-line processing system capable of automatically suppressing overloads of buffer regions, the on-line processing system comprising: a plurality of work processing means for carrying out work processes based on application programs; a plurality of buffer pools having the buffer regions; buffer control means, coupled to said work processing means and said buffer pools, for allocating the buffer regions of said buffer pools for use by each of said work processing means; threshold value control means, coupled to said buffer control means, for detecting a dangerous state of the buffer regions when said buffer control means acquires the buffer regions from said buffer pools by comparing predetermined information related to an amount of buffer regions used and a predetermined threshold value, said dangerous state indicating a possibility of a buffer overload due to lack of storage regions provided by the buffer regions; work supervision control means, coupled to said buffer control means, for automatically detecting a work processing means having a priority which is lower than a predetermined priority value out of said plurality of work processing means, and for suppressing said detected work processing means, so that the overload of the buffer regions is avoided; and a work control table storing first information and second information related to each of said plurality of work processing means, said first information indicating a most recent time of use of each buffer region by each work processing means, said second information indicating a number of times each buffer region is used by each work processing means, said buffer control means allocating the buffer regions of said buffer pools for use by each of said work processing parts based on said work control table.