这个是什么？？

zhousir

我看的北桥的这个缓存是什么东西？？和系统的二级缓存有关系嘛？？

98°

http://www.hudong.com/wiki/CPU%E7%BC%93%E5%AD%98

98°

A method of reducing errors in a cache memory of a computer system (e.g., an L2 cache) by periodically issuing a series of purge commands to the L2 cache, sequentially flushing cache lines from the L2 cache to an L3 cache in response to the purge commands, and correcting errors (single-bit) in the cache lines as they are flushed to the L3 cache. Purge commands are issued only when the processor cores associated with the L2 cache have an idle cycle available in a store pipe to the cache. The flush rate of the purge commands can be programmably set, and the purge mechanism can be implemented either in software running on the computer system, or in hardware integrated with the L2 cache. In the case of the software, the purge mechanism can be incorporated into the operating system. In the case of hardware, a purge engine can be provided which advantageously utilizes the store pipe that is provided between the L1 and L2 caches. The L2 cache can be forced to victimize cache lines, by setting tag bits for the cache lines to a value that misses in the L2 cache (e.g., cache-inhibited space). With the eviction mechanism of the cache placed in a direct-mapped mode, the address misses will result in eviction of the cache lines, thereby flushing them to the L3 cache.

hrxphd

原帖由 zhousir 于 2009-4-14 18:53 发表
513004

我看的北桥的这个缓存是什么东西？？和系统的二级缓存有关系嘛？？

不知道 看看

zhousir

错误修正是什么意思？？