发明名称 |
Data Processing System and Method for Efficient L3 Cache Directory Management |
摘要 |
A system and method for cache management in a data processing system having a memory hierarchy of upper memory and lower memory cache. A lower memory cache controller accesses a coherency state table to determine replacement policies of coherency states for cache lines present in the lower memory cache when receiving a cast-in request from one of the upper memory caches. The coherency state table implements a replacement policy that retains the more valuable cache coherency state information between the upper and lower memory caches for a particular cache line contained in both levels of memory at the time of cast-out from the upper memory cache.
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申请公布号 |
US2008091885(A1) |
申请公布日期 |
2008.04.17 |
申请号 |
US20070956102 |
申请日期 |
2007.12.13 |
申请人 |
GUTHRIE GUY L;STARKE WILLIAM J;WILLIAMS DEREK E;WILLIAMS PHILIP G |
发明人 |
GUTHRIE GUY L.;STARKE WILLIAM J.;WILLIAMS DEREK E.;WILLIAMS PHILIP G. |
分类号 |
G06F13/00 |
主分类号 |
G06F13/00 |
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地址 |
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