-
公开(公告)号:US20060106991A1
公开(公告)日:2006-05-18
申请号:US10989997
申请日:2004-11-16
IPC分类号: G06F12/00
CPC分类号: G06F12/122 , G06F12/0862 , G06F12/0897
摘要: We present a “directory extension” (hereinafter “DX”) to aid in prefetching between proximate levels in a cache hierarchy. The DX may maintain (1) a list of pages which contains recently ejected lines from a given level in the cache hierarchy, and (2) for each page in this list, the identity of a set of ejected lines, provided these lines are prefetchable from, for example, the next level of the cache hierarchy. Given a cache fault to a line within a page in this list, other lines from this page may then be prefetched without the substantial overhead to directory lookup which would otherwise be required.
摘要翻译: 我们提出一个“目录扩展名”(以下简称“DX”)来辅助缓存层级中的邻近级别之间的预取。 DX可以维护(1)包含最近从缓存层级中的给定级别排出的行的页面列表,以及(2)对于该列表中的每个页面,提供这些行是可预取的集合的标识 从例如缓存层次结构的下一级。 给定列表中页面内的行的高速缓存错误,然后可以预取此页面中的其他行,而不需要大量开销,否则将需要目录查找。