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User selectable priority for disk array background operations

  • US 5,822,584 A
  • Filed: 10/13/1995
  • Issued: 10/13/1998
  • Est. Priority Date: 10/13/1995
  • Status: Expired due to Term
First Claim
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1. For use with a computer system having a mass storage drive array subsystem having a plurality of commands executing as foreground operations and a plurality of commands executing as background operations, a method for selecting priority between execution of the foreground executing commands and the background executing commands, said method comprising the steps of:

  • providing a priority command indicating a priority level;

    converting said priority level into a pause duration indicative of the time to pause a foreground executing command and a pause interval indicating the number of foreground executing commands out of a predetermined number of foreground executing commands to pause for said pause duration;

    determining if the foreground command to be executed is to be paused based on said pause interval;

    delaying the foreground command to be executed for the pause duration if the foreground command is to be paused; and

    executing the background commands without delays.

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