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Information processing device and information processing method

  • US 8,645,612 B2
  • Filed: 03/31/2011
  • Issued: 02/04/2014
  • Est. Priority Date: 07/30/2010
  • Status: Expired due to Fees
First Claim
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1. An information processing device comprising:

  • an operating system which accesses a hardware resource including a nonvolatile semiconductor memory and a semiconductor memory used as a cache memory of the nonvolatile semiconductor memory;

    first and second virtual machines operating on the operating system;

    a cache-miss detection section which detects cache miss to the semiconductor memory in a process executed by the first virtual machine;

    a cache control section which executes a cache process when the cache-miss detection section detects the cache miss in the process; and

    a virtual machine switching section which, when the cache-miss detection section detects the cache miss in the process executed by the first virtual machine, switches a virtual machine in execution from the first virtual machine to the second virtual machine while the cache control section executes the cache process,wherein the operating system selects process switching when a time required for the cache process is shorter than or equal to a reference time, and selects virtual machine switching when the time required for the cache process is longer than the reference time.

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