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Memory management method for coupled memory multiprocessor systems

  • US 5,237,673 A
  • Filed: 03/20/1991
  • Issued: 08/17/1993
  • Est. Priority Date: 03/20/1991
  • Status: Expired due to Term
First Claim
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1. A method of managing the memory of a multiprocessor computer system including a plurality of CPU modules to which processes to be run on said computer system are assigned, said computer system also including a storage medium connected to said modules via a global interconnect, each of said CPU modules including a processor and a coupled memory region, said method comprising the steps of:

  • transferring, from said storage medium, the data and stack pages of a process to be run on said computer system to the coupled memory region of the CPU module to which the process is assigned; and

    determining, at prescribed intervals, if the free memory of each of said coupled memory regions is below a threshold and, if below the threshold, scanning a predetermined number of pages and placing infrequently used pages on a list of pages that can be replaced with pages stored in said storage medium.

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