I wrote simple proof of concept library. The main aim is to reduce GC usage and improve data locality by replacing dynamic array for small immutable arrays.
You can find more info here: * wiki - https://bitbucket.org/sibnick/inplacearray/wiki/Home * source code - https://bitbucket.org/sibnick/inplacearray/src I include small demo - word counter. This program builds AA array (word => counter) for given text file in UTF-8. It is possible switch between builtin array/string and inplace array by changing one line code. I used: - unpacked List of all page titles - https://dumps.wikimedia.org/enwiki/20150304/enwiki-20150304-all-titles.gz as test sample. - Ubuntu 14.04 x64 - dmd 2.67.0 - dub build -b release - ./inplace_array --DRT-gcopt=profile:1 test_big.txt Here results. Buildin string: GC summary: 1355 MB, 12 GC 5659 ms, Pauses 3116 ms < 1436 ms Inplace array: GC summary: 715 MB, 22 GC 5281 ms, Pauses 4207 ms < 938 ms As you can see it is possible noticable reduce memory allocation (1355Mb -> 715Mb) and max pause time (1436ms -> 938ms). So it is possible improve situation with GC from new side.
