Re: Improving performance of Lua on low-end systems

[Enrico Colombini <erix@...>]

On 28/10/2014 5.15, Coda Highland wrote:
> The main loop isn't doing a lot of
> work, but makes multiple calls to C functions (read the button states,
> draw things on the screen, read the clock). Does anyone have advice to
> improve performance?

Hard to say without analysing the architecture in detail, but (assuming 
interpreted Lua) you could try minimizing the number of times the 
language barrier is crossed.
That would imply moving some relatively low-level jobs to the C(++) 
side, for example checking and pre-processing all the inputs, handling 
batches of drawing requests or, better yet, grouping them into 
higher-level requests.

And of course minimizing allocations and using a separate allocator if 
necessary (some testing required), but I guess you are already aware of 
that.

--
  Enrico