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DOE OSTI · 1113227

Using DMA for copying performance counter data to memory

Gara, Alan·Salapura, Valentina·Wisniewski, Robert W
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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.

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Gara, Alan, Salapura, Valentina, Wisniewski, Robert W. 2013-12-31. Using DMA for copying performance counter data to memory. https://www.osti.gov/biblio/1113227

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