High memory usage in vibe.d application

[Radu]

On Friday, 29 June 2018 at 09:44:27 UTC, Anton Fediushin wrote:
> Almost forgot, there are two timers which call this function 
> for two different streams.
>
> Value of `metaint` is 16000, which means that only 16KB of 
> memory are allocated for the `buffer`, then it reads another 
> byte which contains length of the metadata / 16 and then it 
> reads the metadata which is 100-200 bytes long.
>
> This gives us... 16KiB per one nowPlaying() call. Why doesn't 
> it free the memory?

Maybe use the 
https://dlang.org/phobos/std_experimental_allocator_mallocator.html instead of theAllocator as it defaults to GC.

Also, why you .idup the array? .array already creates a new one 
on the heap.