但真正的问题是，理想模型往往建立在需求高峰与利用率饱和的假设之上。而真实世界中的利用率，从来不会长期维持在高位。
收拾好的阿爸又开始纠结自己去的时间，太早了，感觉自己上赶着一顿饭，太晚了，又感觉自己不礼貌。因此，如果没有对方下一步的明确“指示”，不知那头饭局的进程如何，他绝不能出门。
。同城约会对此有专业解读
Credits: This analysis of the 80386 draws on the microcode disassembly and silicon reverse engineering work of reenigne, gloriouscow, smartest blob, and Ken Shirriff.
Segmentation maps a logical address (a 16-bit selector plus a 32-bit offset) to a 32-bit linear address, enforcing privilege and limit checks along the way. Paging then translates that linear address to a physical address, adding a second layer of User/Supervisor and Read/Write protection. The two layers are independent: segmentation is always active in protected mode, while paging is optional (controlled by CR0.PG).