An image forming apparatus for performing functions, includes a storage region configured to store logs of network services that execute the functions, wherein the storage region is divided into plural function segments each corresponding to one of the functions; a managing unit configured to manage the logs in groups formed by grouping together the network services in terms of the corresponding functions; a recording unit configured to record the logs of the network services into each of the function segments in the storage region according to the corresponding functions; and a stopping unit configured to stop the network services in terms of the groups managed by the managing unit, based on storage state information indicating an available space in each of the function segments in the storage region.