HYBRID BUFFER MANAGEMENT SCHEME FOR IMMUTABLE PAGES
    3.
    发明申请
    HYBRID BUFFER MANAGEMENT SCHEME FOR IMMUTABLE PAGES 有权
    混合缓冲器管理方案

    公开(公告)号:US20150134709A1

    公开(公告)日:2015-05-14

    申请号:US14281453

    申请日:2014-05-19

    Abstract: Exemplary embodiments provide a hybrid buffer pool for a database that includes a plurality of data pages contained in storage. The hybrid buffer pool comprises: a shared buffer pool of page frames containing dirty data pages that are modified after reading that will be written back to storage; an immutable buffer pool that temporarily contains read-only data pages from the storage; and a page multiplexer that identifies which ones of the data pages from storage to store in the immutable buffer pool based at least in part on information from a query processor.

    Abstract translation: 示例性实施例提供了一种用于数据库的混合缓冲池,其包括存储中包含的多个数据页。 混合缓冲池包括:页面帧的共享缓冲池,包含在读取之后被修改的将被写回存储的脏数据页; 一个不可变的缓冲池,暂时从存储器中包含只读数据页; 以及页面多路复用器,其至少部分地基于来自查询处理器的信息来识别存储器中的哪些数据页面存储在不可变缓冲池中。

    SWAT COMMAND AND API FOR ATOMIC SWAP AND TRIM OF LOGICAL PAGES
    7.
    发明申请
    SWAT COMMAND AND API FOR ATOMIC SWAP AND TRIM OF LOGICAL PAGES 有权
    用于原子交换和逻辑页面的SWAT命令和API

    公开(公告)号:US20160085796A1

    公开(公告)日:2016-03-24

    申请号:US14954885

    申请日:2015-11-30

    CPC classification number: G06F17/30082 G06F3/0643 G06F17/30091

    Abstract: Example embodiments provide access to an updated file performed by at least one processor, wherein responsive to receiving a first list of logical page numbers (LPNs) and a second list of LPNs for an update, wherein the first list of LPNs is mapped to a first list of physical page numbers (PPNs), and the second list of LPNs is mapped to a second list of PPNs, the method, comprising: atomically remapping the first list of LPNs so that the first list of LPNs is mapped to the second list of PPNs; and trimming a mapping of the first list of LPNs to the first list of PPNs.

    Abstract translation: 示例性实施例提供对由至少一个处理器执行的更新文件的访问,其中响应于接收逻辑页码(LPN)的第一列表和用于更新的LPN的第二列表,其中LPN的第一列表被映射到第一 物理页码列表(PPN),并且第二LPN列表被映射到PPN的第二列表,该方法包括:原子地重新映射LPN的第一列表,使得第一LPN列表被映射到 PPNs; 以及将第一LPN列表的映射修剪到PPN的第一列表。

    CLEANING DEVICE
    8.
    发明申请
    CLEANING DEVICE 有权
    清洁装置

    公开(公告)号:US20150173577A1

    公开(公告)日:2015-06-25

    申请号:US14524603

    申请日:2014-10-27

    Abstract: A cleaning device includes an improved structure in which cleaning performance can be improved. The cleaning device includes an inhalation unit to generate inhalation force to inhale air into a main body, wherein the inhalation unit includes: an impeller that is rotatable; an impeller cover having an inlet damper formed therein; and a return channel coupled to the impeller cover so that the impeller can be accommodated in the return channel, wherein the return channel includes: an inner frame; and an outer frame placed at an outer side of the inner frame so as to be spaced apart from the inner frame, and a plurality of wings are disposed between the inner frame and the outer frame.

    Abstract translation: 清洁装置包括改进的结构,其中可以提高清洁性能。 清洁装置包括吸入单元以产生将空气吸入主体的吸入力,其中吸入单元包括:可旋转的叶轮; 其中形成有入口阻尼器的叶轮盖; 以及联接到所述叶轮盖的返回通道,使得所述叶轮可以容纳在所述返回通道中,其中所述返回通道包括:内框架; 以及设置在所述内框架的外侧以与所述内框架间隔开的外框架,并且在所述内框架和所述外框架之间设置有多个翼片。

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