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AUTONOMOUS DRAM SCRUB AND ERROR COUNTING

  • US 20170269979A1
  • Filed: 03/15/2016
  • Published: 09/21/2017
  • Est. Priority Date: 03/15/2016
  • Status: Active Grant
First Claim
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1. A method of dynamic random access memory (DRAM) scrub and error counting in a memory of a computer system, the method comprising:

  • performing a scrub operation at memory locations in a DRAM, the performing including, for each of the memory locations;

    receiving a refresh command at the DRAM;

    executing a read/modify/write (RMW) operation at the memory location, the executing including writing corrected bits to the memory location; and

    incrementing an error count in response to detecting an error during the executing;

    comparing the error count to an error threshold; and

    initiating an alert in response to the error count exceeding the error threshold.

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