发明授权
- 专利标题： Using DMA for copying performance counter data to memory
- 专利标题（中）： 使用DMA将性能计数器数据复制到存储器
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申请号： US12684367申请日： 2010-01-08
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公开(公告)号： US08275954B2公开(公告)日： 2012-09-25
- 发明人: Alan Gara , Valentina Salapura , Robert W. Wisniewski
- 申请人： Alan Gara , Valentina Salapura , Robert W. Wisniewski
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 代理机构： Scully, Scott, Murphy & Presser, P.C.
- 代理商 Daniel P. Morris, Esq.
- 主分类号： G06F12/00
- IPC分类号： G06F12/00
摘要：
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 counter data.
公开/授权文献
- US20110173403A1 USING DMA FOR COPYING PERFORMANCE COUNTER DATA TO MEMORY 公开/授权日：2011-07-14
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