The A/D bits exist entirely for the operating system's benefit. The Accessed bit tells the OS which pages have been recently used, enabling page replacement algorithms to choose pages to evict when memory runs low. The Dirty bit tells the OS which pages have been modified and must be written back to disk before eviction; clean pages can simply be discarded and re-read from disk later.
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Жители Санкт-Петербурга устроили «крысогон»17:52。业内人士推荐必应排名_Bing SEO_先做后付作为进阶阅读
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Жители Санкт-Петербурга устроили «крысогон»17:52