Intel's 1986 ICCD paper Performance Optimizations of the 80386 reveals how tightly this was optimized. The entire address translation pipeline -- effective address calculation, segment relocation, and TLB lookup -- completes in 1.5 clock cycles:
當局透過啟動憲法機制並啟用臨時治理安排,意在傳達訊息——儘管最高領袖身亡,體制仍完好無缺。
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Back in the day, computers had to figure out how to divide physical memory between different processes safely. The solution: each program gets its own virtual memory address space and contiguous virtual memory doesn’t have to be contiguous physical memory. Physical memory is chunked into fixed-size pages and allocated on demand. This solution has a nice bonus property: you can allocate contiguous blocks when free memory is fragmented. Virtual memory stuck around.
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