Using DMA for copying performance counter data to memory

Title: Using DMA for copying performance counter data to memory

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Abstract

A device for copying performance counter data includes hardware path that connects a direct memory access (DMA) unit to a plurality of hardware performance counters and a memory device. Software prepares an injection packet for the DMA unit to perform copying, while the software can perform other tasks. In one aspect, the software that prepares the injection packet runs on a processing core other than the core that gathers the hardware performance data.

Inventors:: Gara, Alan; Salapura, Valentina; Wisniewski, Robert W

Issue Date:: 2013-12-31

Research Org.:: International Business Machines Corp., Armonk, NY (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1113227

Patent Number(s):: 8621167

Application Number:: 13/446,467

Assignee:: International Business Machines Corporation (Armonk, NY)

Patent Classifications (CPCs):: G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING

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G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
G06F11/34 - Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation {
G06F2201/88 - Monitoring involving counting
G06F13/28 - using burst mode transfer, e.g. direct memory access {DMA}, cycle steal

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DOE Contract Number:: B554331

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 97 MATHEMATICS AND COMPUTING

Citation Formats


                    Gara, Alan, Salapura, Valentina, and Wisniewski, Robert W. Using DMA for copying performance counter data to memory.  United States: N. p., 2013. 
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                    Gara, Alan, Salapura, Valentina, & Wisniewski, Robert W. Using DMA for copying performance counter data to memory.  United States.

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                    Gara, Alan, Salapura, Valentina, and Wisniewski, Robert W. Tue .  
        "Using DMA for copying performance counter data to memory".  United States.  https://www.osti.gov/servlets/purl/1113227.

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@article{osti_1113227,

  title        = {Using DMA for copying performance counter data to memory},

  author       = {Gara, Alan and Salapura, Valentina and Wisniewski, Robert W},

  abstractNote = {A device for copying performance counter data includes hardware path that connects a direct memory access (DMA) unit to a plurality of hardware performance counters and a memory device. Software prepares an injection packet for the DMA unit to perform copying, while the software can perform other tasks. In one aspect, the software that prepares the injection packet runs on a processing core other than the core that gathers the hardware performance data.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2013},

  month        = {12}

}

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