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If there was no compelling reason to use C++, I forego it entirely.But I did a little googling before I posted this, and it looks like QT has QML now and has adopted a lot buy canada goose jacket cheap of the concepts that made WPF superior, so I suppose I cheap Canada Goose Parkas may have spoken too soon. The basic cycle Canada Goose Coats On Sale is:Measure code to find bottlenecks (latency or memory).Discover measurement was flawed and Canada Goose Jackets was measuring the wrong canada goose black friday sale thing, and fix measurement.Repeat Canada Goose Online 1 2 until you get a good measurement.Edit the 3 4 lines of code causing 90% of your latency.Return to 1 and repeat.Come to think of it, if you got the time, nearly all of touch on these subjects to varying degrees. In particular CppCon 2015: Chandler Carruth “Tuning C++: Benchmarks, and CPUs, and Compilers! Oh My!”.Here some tips that are of arguable usefulness:My code runs in CPU isolation, no other threads get to run on the same cores. So if that something canadian goose jacket that useful to you, I recommend measuring that way. Otherwise, all your latency measurements will become useless as soon as there a context switch. But when you tell the kernel that only one thread can run on a core, then you can be fairly sure that any latency cheap Canada Goose is canada goose coats caused by the thread. (Not 100% accurate, but it usually OK)Fit everything you need into the L2 cache. If you have to go to the L3 cache, that going to be a big hit. Smaller canada goose memory is faster. Not copying is faster.2.1. All too often, we only hold 3 4 items in a container. It often faster to directly iterate over a small array of small items than using a map for “O(1)” lookups. But always measure!2.2. Even worse, building a cache may cost canada goose factory sale more than re calculating. If building a value only costs 200 cycles, it may take less time to rebuild it than fetching it from canada goose uk outlet RAM.Don switch AVX instructions on and off. Either keep using them, or skip them entirely. Each time you enable them you can easily lose dozens of nanoseconds. (I wonder if they fixed that in Skylake? I haven measured.)Ugh, sorry. These are all anecdotal style stuff. when you tell the kernel that only one thread can run on a core, then you can be fairly sure that buy canada goose jacket any latency is caused by the threadTIL about isolated profiling! That a good point indeed.Don switch AVX instructions on and off. 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