A compressed memory management arrangement for a computer system having one or more processors (P 1 -P N), compressible main memory, secondary memory and an operating system, the compressible main memory having a compressed memory space comprising an active part accessible to said one or more processors (P 1 -P N), as well as an inactive part not accessible to said one or more processors (P 1 -P N) in the form of memory freed up by memory compression, the compressed memory management arrangement comprising: an auxiliary memory for maintaining a layout of the compressed memory space of the compressible main memory, the layout including size and location of individual memory pages as well as free memory regions in said compressed memory space; and selector functionality interfacing said operating system, said secondary memory and said auxiliary memory; wherein the selector functionality is configured to: trigger the compression of a memory page in the compressible main memory; intercept a page-in request from said operating system to said secondary memory, use the layout of the compressed memory space maintained by the auxiliary memory to locate, when available, in said auxiliary memory a page requested by the page-in request, and make the located requested page available in the active part of the compressed memory space by updating metadata to reflect that the located page belongs to the active part of the compressed memory space; and intercept a page-out request from said operating system to said secondary memory, use the layout of the compressed memory space maintained by the auxiliary memory to obtain a free region in said compressed memory space for a page requested by the page-out request, and accommodate the requested page in said obtained free region by updating metadata to reflect that the requested page belongs to the inactive part of the compressed memory space. an auxiliary memory for maintaining a layout of the compressed memory space of the compressible main memory, the layout including size and location of individual memory pages as well as free memory regions in said compressed memory space; and selector functionality interfacing said operating system, said secondary memory and said auxiliary memory; wherein the selector functionality is configured to: trigger the compression of a memory page in the compressible main memory; intercept a page-in request from said operating system to said secondary memory, use the layout of the compressed memory space maintained by the auxiliary memory to locate, when available, in said auxiliary memory a page requested by the page-in request, and make the located requested page available in the active part of the compressed memory space by updating metadata to reflect that the located page belongs to the active part of the compressed memory space; and intercept a page-out request from said operating system to said secondary memory, use the layout of the compressed memory space maintained by the auxiliary memory to obtain a free region in said compressed memory space for a page requested by the page-out request, and accommodate the requested page in said obtained free region by updating metadata to reflect that the requested page belongs to the inactive part of the compressed memory space. trigger the compression of a memory page in the compressible main memory; intercept a page-in request from said operating system to said secondary memory, use the layout of the compressed memory space maintained by the auxiliary memory to locate, when available, in said auxiliary memory a page requested by the page-in request, and make the located requested page available in the active part of the compressed memory space by updating metadata to reflect that the located page belongs to the active part of the compressed memory space; and intercept a page-out request from said operating system to said secondary memory, use the layout of the compressed memory space maintained by the auxiliary memory to obtain a free region in said compressed memory space for a page requested by the page-out request, and accommodate the requested page in said obtained free region by updating metadata to reflect that the requested page belongs to the inactive part of the compressed memory space.