Memory allocation manager and method performed thereby for managing memory allocation

A method performed by a memory allocation manager for managing memory allocation, within a data centre, to an application, the data centre comprising at least a Central Processing Unit, CPU, pool and at least one memory pool, the method comprising:

• receiving information comprising a list of with a plurality of instances of an application to be initiated, wherein each instance to be initiated is associated with an individual memory requirement, the information further comprising information about a type or a version of the application to be initiated and information about an internal relationship between the plurality of instances to be initiated,
• determining for the list of the plurality of instances of the application to be initiated, a minimum number of memory blocks and associated sizes required based on the received information, by identifying at least a portion of the memory blocks and associated sizes to be shared by two or more instances based on their individual memory requirements and/or the internal relationship between the plurality of instances of the application to be initiated,
• transmitting, to a Memory Management Controller, MMC, information indicating the determined minimum number of memory blocks and associated sizes required to initiate the list of instances to be initiated,
• receiving, from the MMC, a location and a physical address of each allocation of memory blocks based on the determined minimum number of memory blocks and associated sizes required to initiate the list of instances, and wherein each memory block is associated with the physical address for at least one memory unit among a pool of memory units;
• receiving, from the MMC, an allocation of a number of memory blocks for shared access, the number of memory blocks including the minimum number of memory blocks for the list of instances of the application to be initiated based on the determined minimum number of memory blocks,
• mapping the allocation of the number of memory blocks for shared access to the list of instances of the application to be initiated, wherein the number of memory blocks allocated for shared access comprises parts of memory blocks to be shared by the two or more instances of the application to be initiated, wherein a first of the two or more instances has write access and a second of the two or more instances has read access at a point in time, and
• transmitting the mapping of the allocation of the number of memory blocks for shared access to the list of instances of the application to be initiated to a MMU function in the CPU pool for instantiation of the list of instances of the application.