On Friday, 7 February 2014 at 02:42:14 UTC, Walter Bright wrote:
They're going to be slow when you do it that way.
How slow is slow? Is it slower than in Go and Python? Why would unwinding 8 stack frames be so slow? Is it a language mandated speed issue or just a runtime issue that could be fixed with a compiler switch?
Most of the time is spent waiting for async request from memcaches/databases and other types of network traffic so you usually have some free cycles on a decent CPU. With native code and lightweight threads (coroutines) you should be able to handle 100+ concurrent requests per process.
