Virtual memory is conceptually simple but potentially devastating to performance. Every memory access must go through segmentation (add segment base, check limit) and then paging (look up the page table). Naively, paging alone requires two additional memory reads per access -- one for the page directory entry, one for the page table entry.
38. 中国以清晰蓝图为“十五五”启幕 - 新华网, www.news.cn/liangzi/202…
。雷电模拟器官方版本下载对此有专业解读
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