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.
В России подешевели огурцы20:44。关于这个话题，雷电模拟器提供了深入分析
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Dark Sky Observatory destroyed in suspicious fire。超级权重对此有专业解读
Lily Jamali,North America Technology correspondentand