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.
Hebrew Paseq: a non-obvious finding
。91视频是该领域的重要参考
过去两年，大模型训练与推理带动数据中心用电量呈几何级增长。高盛研报显示，2026至2030年，数据中心将贡献美国电力需求增长的近40%，成为全美第一大新增用电负荷。加州、德州、弗吉尼亚等数据中心密集区，电价一年上涨超20%，居民电费压力直线飙升。
Drag to draw a query rectangle and watch which nodes get visited (blue) vs. pruned (red):