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    • 72. 发明申请
    • Method and system for decreasing power consumption in memory arrays having usage-driven power management
    • 具有使用驱动电源管理的存储器阵列中的功率消耗降低的方法和系统
    • US20070011421A1
    • 2007-01-11
    • US11176819
    • 2005-07-07
    • Thomas KellerCharles LefurgyHai Huang
    • Thomas KellerCharles LefurgyHai Huang
    • G06F13/00G06F1/32
    • G06F1/3275G06F1/3225G11C5/14Y02D10/13Y02D10/14
    • A method and system for decreasing power consumption in memory arrays having usage-driven power management provides decreased power consumption in the memory array of a processing system. Per-page usage information is gathered on memory by a memory controller and periodically evaluated by software. The software distinguishes between more frequently accessed pages and less frequently accessed pages by analyzing the gathered usage information and periodically migrates physical memory pages in order to group less frequently accessed pages and more frequently access pages in separately power-managed memory ranks. When used in conjunction with a usage-driven power management mechanism, the ranks containing the less frequently accessed pages can enter deeper power-saving states and/or any power-saving state for longer periods. Operation may be further enhanced by using packed allocation in the memory ranks containing the less-frequently accessed pages and scattered allocation in the memory ranks having more frequently accessed pages.
    • 用于降低具有使用驱动功率管理的存储器阵列中的功率消耗的方法和系统提供了处理系统的存储器阵列中的功耗降低。 每页使用信息由存储器控制器收集在存储器上,并由软件定期评估。 该软件通过分析收集的使用信息来区分更频繁访问的页面和较不频繁访问的页面,并周期性地迁移物理内存页面,以便分组较不频繁访问的页面,并且更频繁地在单独的功率管理内存等级中访问页面。 当与使用驱动的电源管理机制结合使用时,包含较不频繁访问的页面的行列可以在更长的时间内进入更深的省电状态和/或任何省电状态。 可以通过在包含较不频繁访问的页面的内存列中使用打包分配以及具有更频繁访问的页面的内存级别中的分散分配来进一步增强操作。