Controlling memory contention on a scalable multiprocessor-based telephone switch

The effective harnessing of multiprocessing power through strategies that control shared memory contention and achieve high system capacity is studied. Preserving the integrity of data requires the serialization of accesses to the shared variable, stored in the shared memory, that may lead to a decrease in system performance. The study is focused on a telephone switch that uses a shared-memory multiprocessor system. The scalable multiprocessor-based call control module, the capacity of which can be improved on demand through the incorporation of additional processors, can perform several functions, including call set up, billing, and switch maintenance