Haswell ist der Codename einer Prozessor-Mikroarchitektur des Chipherstellers Intel, welche als Nachfolger der Ivy-Bridge-Architektur im 2.Quartal 2013 erschien. Soit is important to know how having some erased elements affects performanceresults.Same as the previous test but here we erase/insert 1% of all elementsper-frame instead of per 3600 frames, then once again increase the percentageto 5% then 10% per-frame. What it does is very similar to the pointer_deque -there is a deque of pointers to elements within the colony, whose locationsstay stable because a colony never invalidates pointers to non-erased elements.However unlike the pointer_deque, the pointer_colony will free up and re-useerased element memory on the fly, meaning you will not have the memory bloatassociated with the indexed_vector and pointer_deque.plf::list out-performs std::list by roughly 25% on average, but isoutperformed by everything else. OS is a stripped-back Windows 7 x64 SP1 installation with most services, background tasks (including explorer) and all networking disabled. int, (c) a 64-bit type ie. In this case we use a secondary vector of indexes to iterateover the vector of elements, and only erase from the vector of indexes. 272 bytes seems to be the point at which .sort() and indiesort performance are equivalent.Essentially there is a bit less variance in plf::list's results butstd::list's results for the largest number of elements quadruples. Once you get to 272 bytes the performance difference is immediately apparent; 88% faster with indiesort on average.Results here are very similar to the low modification results.Here we repeat the high modification test, but with ordered insertion. By doing this we avoidreallocation during erasure for the element deque, meaning pointers to elementswithin the element deque stay valid.These tests are primarily for plf::list. In the benchmark above, both lists are unchanged after insertion.Lets see how those results alter once we sort the list elements prior todestruction, thereby disrupting the original linear sequence of elements inmemory:In these tests we will be measuring up to 100000 elements, as higher numbersuse too much memory with the indexed_vector and pointer_deque containers.A second modification approach, which we'll call a vector_bool, is a verycommon approach in a lot of game engines - a bool or similar type is added tothe original struct or class, and this field is tested against to see whetheror not the object is 'active' (true) - if inactive (false), it is skipped over.We will also compare this approach using a deque.In order to completely test plf::colony against a packed-array-styleimplementation, it is necessary to measure performance while exploiting bothcontainer's linking mechanisms - for colony this is pointers or iterators, fora packed array this is a handle, or more specifically a pointer to a pointer(or the equivalent index-based solution).
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