I/O amplification for determining to increase workload

A system comprising:

• a memory;
• and
• a processor in communication with the memory, the processor being configured to perform operations comprising:
• inputting an amplification number into a storage subsystem interface;
• receiving an original input/output (I/O) request from an application, wherein the application is a webpage;
• determining, in response to the amplification number being input, to duplicate the original I/O request one or more times;
• generating one or more duplicate I/O requests of the original I/O request for simultaneous execution with the original I/O request, wherein the amount of the one or more duplicate I/O requests corresponds to the amplification number;
• storing the original I/O request in a general address space in a storage subsystem;
• storing the one or more duplicate I/O requests in a reserved address space in the storage subsystem;
• executing, simultaneously, the original I/O request in the general address space and all of the one or more duplicate I/O requests in the reserved address space;
• determining that the original I/O request type is a write operation wherein the write operation alters the behavior of the storage subsystem;
• duplicating the write operation of the original I/O request to the one or more duplicate I/O requests;
• altering the behavior of the reserved address space of the storage subsystem by executing the write operation, wherein altering the behavior of the reserved address space includes changing a display feature of the webpage;
• and
• merging the general address space and the reserved address space together, wherein the general address space and the reserved address space are automatically merged, upon meeting a performance metric threshold, by removing a virtual partition separating the general address space and the reserved address space.

A computer program product comprising a non-transitory computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform a method, the method comprising:

• inputting an amplification number into a storage subsystem interface;
• receiving an original input/output (I/O) request from an application, wherein the application is a webpage;
• determining, in response to the amplification number being input, to duplicate the original I/O request one or more times;
• generating one or more duplicate I/O requests of the original I/O request for simultaneous execution with the original I/O request, wherein the amount of the one or more duplicate I/O requests corresponds to the amplification number;
• storing the original I/O request in a general address space in a storage subsystem;
• storing the one or more duplicate I/O requests in a reserved address space in the storage subsystem;
• and
• executing, simultaneously, the original I/O request in the general address space and all of the one or more duplicate I/O requests in the reserved address space;
• determining that the original I/O request type is a write operation wherein the write operation alters the behavior of the storage subsystem;
• duplicating the write operation of the original I/O request to the one or more duplicate I/O requests;
• altering the behavior of the reserved address space of the storage subsystem by executing the write operation, wherein altering the behavior of the reserved address space includes changing a display feature of the webpage;
• and
• merging the general address space and the reserved address space together, wherein the general address space and the reserved address space are automatically merged, upon meeting a performance metric threshold, by removing a virtual partition separating the general address space and the reserved address space.