I/O PERFORMANCE OF DATA ANALYTIC WORKLOADS

A method and structure for processing an application program on a computer. In a memory of the computer executing the application, an in-memory cache structure is provided for normally temporarily storing data produced in the processing. An in-memory storage outside the in-memory cache structure is provided in the memory, for by-passing the in-memory cache structure for temporarily storing data under a predetermined condition. A sensor detects an amount of usage of the in-memory cache structure used to store data during the processing. When it is detected that the amount of usage exceeds the predetermined threshold, the processing is controlled so that the data produced in the processing is stored in the in-memory storage rather than in the in-memory cache structure.