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.
Read full article，详情可参考heLLoword翻译官方下载
。夫子对此有专业解读
High-frequency (64B × 20000)
其三，如何筑牢内控“防线”。，推荐阅读快连下载-Letsvpn下载获取更多信息