Slowdown when accessing data at page boundaries?
问题 (My question is related to computer architecture and performance understanding. Did not find a relevant forum, so post it here as a general question.) I have a C program which accesses memory words that are located X bytes apart in virtual address space. For instance, for (int i=0;<some stop condition>;i+=X){array[i]=4;} . I measure the execution time with a varying value of X . Interestingly, when X is the power of 2 and is about page size, e.g., X=1024,2048,4096,8192... , I get to huge