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Run-time instrumentation monitoring of processor characteristics

  • US 9,459,873 B2
  • Filed: 03/05/2013
  • Issued: 10/04/2016
  • Est. Priority Date: 03/16/2012
  • Status: Active Grant
First Claim
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1. A computer implemented method for monitoring processor characteristic information of a processor using run-time-instrumentation, the method comprising:

  • executing an instruction stream on a processor;

    detecting a run-time instrumentation sample point of the executing instruction stream on the processor;

    storing a reporting group in a run-time instrumentation program buffer based on the run-time instrumentation sample point, the reporting group including processor characteristic information associated with the processor;

    detecting a subsequent run-time instrumentation sample point of the executing instruction stream;

    checking current processor characteristic information prior to storing a subsequent reporting group in the run-time instrumentation program buffer based on the subsequent run-time instrumentation sample point;

    determining whether processors in a current configuration are configured to operate with a common CPU capability; and

    based on determining that a difference exists in CPU capability between the processors in the current configuration;

    reading a suppression control of a run-time instrumentation control; and

    suppressing storage of the subsequent reporting group in the run-time instrumentation program buffer based on the suppression control indicating that reporting group storage for a processor having a corresponding CPU capability is to be suppressed.

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