On Thursday, 30 July 2015 at 03:56:25 UTC, Brandon Ragland wrote:
Regarding JavaScript being slower, this benchmark[1] seems to indicate that on average, JavaScript on V8 is at-least 4X slower than a g++ compiled native package. It also appears to use anywhere from 2-4X as much memory.
I think speed optimized javascript is at 50% of regular non-SIMD C. Javascript suffers when you use high level constructs and convenience frameworks, but so does C++ (which is why people don't use them). It will probably take a long time for javascript to get proper cross browser SIMD support though...
When you get rid of IE9 the real bottleneck to combat is the C++ browser runtime, reflow and "random delays" etc.
Memory usage/performance are issues you can limit by using typed arrays/free lists. But the browser impose limitations on memory usage...
