Hello, I've come across this SO post: https://stackoverflow.com/questions/72744401/why-java-turns-out-to-be-faster-than-c-in-this-simple-bubblesort-benchmark-exa
The OP coded two versions of a BubbleSort application and was able to show that C++ is consistently slower than Java. Some of the arguments in favor of C++ was that: *"C++ is not always faster than Java but it can always be made faster than Java"* Considering a zero-gc Java application properly warmed up I think that this argument is flawed or at least very unrealistic for a real-life application development project. The OP went ahead to say: *I've tried clang++ and g++ with a variety of optimization options (-O2, -O3, -Os, -march=native, etc) and they all have produced slower results than Java. I think at this point to make C++ faster I have to dive into the generated assembly code and do some assembly programming. I'm wondering how practical is this approach (assembly programming and assembly debugging) when coding a large real-life application.* I must agree with the OP when he/she says that assembly programming is not practical and debugging assembly code generated by the C++ compiler is a pain in the butt. I can only imagine the time-to-market of a financial application developed that way. My observations have found that C++ is often slower than Java, as his/her simple BubbleSort benchmark demonstrates. It turns out that the HotSpot is able to do a fantastic job generating ultra-optimized assembly code with real-time application profiling information. Another point worth mentioning is that ahead-of-time compilation is very often much slower than just-in-time compilation. I've recently used the GraalVM to compile my entire Java application ahead-of-time to native code. When I've benchmarked my native Java application it was consistently much slower than my HotSpot one. Anyway, I was wondering your opinion about C++ vs Java when it comes to performance for finance applications. Cheers, -RB -- You received this message because you are subscribed to the Google Groups "mechanical-sympathy" group. To unsubscribe from this group and stop receiving emails from it, send an email to mechanical-sympathy+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/mechanical-sympathy/fbdd6869-66f9-455a-90ab-dd3838aec694n%40googlegroups.com.
