Ordering Prefetch in Trees, Sequences and Graphs
نویسنده
چکیده
Compared to hardware prefetching, the prefetching in Web systems faces quite high branching factor. Decision points mostly bifurcate the control flow tree in hardware due to the predominant if-then like program constructs. In contrast, in web there is no limit on the number of links in a page. In the case of hardware quite often all the parallel branches are prefetchedand in some cases condition can be pre-evaluated to determine the prefetch path. Neither is practical for web systems. There is critical for web systems to carefully evaluate all prefetch options. This report contains few analytical results, which show how to rank prefetch paths in various hyper linked graphs shown in Fig-A-D. It seems in most cases optimum prefetch path should depend both on the link transition probability as well as loading time of the component –rather than just the former.
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