1. An event management apparatus, comprising: a memory; and a processor configured to use the memory and execute a process, comprising: first calculating, for each of a plurality of execution intervals that are different each other, a number of events to be executed within a predetermined interval that is equal to or less than a shortest execution interval; reading n data blocks at the predetermined intervals from a storage device that stores, for each of a plurality of events, a data block, wherein the n is a total number of calculated numbers, the data block is used to execute a corresponding event, and each of the plurality of events has either of the plurality of execution intervals; and outputting an execution request including the read data blocks to an execution unit that executes an event.