I’ve been looking at various languages (mostly functional) that offer some great potential for throughput and concurrency. However, for latency sensitive applications (by which I mean the potential to respond to an event < 1ms) seems to be beyond them.
I can do this in C, but I was wondering if anything had come along offering low latency and high concurrency, or are they (as I suspect) mutually exclusive?
Note: In a previous question there was a lot of discussion over the “mutually exclusive” bit – but I think it stands – if you need extremely low latency, you cannot get massive concurrency. I would absolutely love to be proven wrong on this! 🙂
The difference between C and asm is unlikely to be a major factor in response latency. After all, before reaching your code, the system will have to run a fair bit of C code in the Linux kernel first, in order to schedule in your process. You’d be better off doing things like turning on threaded interrupt handlers, setting real-time priorities, and disabling BIOS features that may cause system-management-mode traps.