Information processing system, information processing board, and method of updating cache tag and snoop tag
    5.
    发明公开
    Information processing system, information processing board, and method of updating cache tag and snoop tag 有权
    一种信息处理系统,信息处理卡和方法,用于更新所述缓存和窥探标记

    公开(公告)号:EP1895419A2

    公开(公告)日:2008-03-05

    申请号:EP07106976.9

    申请日:2007-04-26

    申请人: Fujitsu Ltd.

    IPC分类号: G06F12/08

    CPC分类号: G06F12/0822 G06F12/0831

    摘要: In an information processing system loaded with a CPU (104, 2a, 2b) having cache and a system controller (101, 1) having a copy of a tag (105, 3a, 3b) of the cache (snoop tag) (102, 5a, 5b), and the CPU not issuing replacement information about the cache tag (105, 3a, 3b), the number of WAYs (103, 5a-0 - 5a-4, 5b-0 - 5b-4) of the snoop tags in the system controller is larger than the number of WAYs (106, 3a-0 - 3a-3, 3b-0 - 3b-3) of the cache tags in the CPU to reduce a cache miss rate and suppress the degradation of performance by suppressing excess replacement of the cache tags in the CPU.

    摘要翻译: 在装载有CPU的信息处理系统(104,2A,2B),其具有高速缓冲存储器,并具有标签的副本的系统控制器(101 1)(105,图3a,3b)的所述高速缓存(探听标签)(102, 图5a,5b),并且不发出关于缓存标签(替换信息105,3a中的CPU,3b)中,的路的数目(103,图5a-0 - )探听的5 b-4 - 5A 4,图5b 0 在系统控制器的标签比的方式的数量(106,图3a-0 - 图3a-3,3B-0 - 3 b-3)放大CPU中的缓存标签率的降低高速缓存未命中和抑制的性能劣化 通过抑制过剩更换CPU高速缓存中的标签。