Credit: ExpressVPN
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.
，这一点在safew官方版本下载中也有详细论述
重量 225g±，预计提供普通版与北斗卫星通信版，最高可选 16GB + 1TB 存储；
content may vary depending on the source material and it is important to review
The new scheme aims to alleviate pressure on health services later in life