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Allocators

Just some experimants with allocators. Do not use this in production! (unless?)

Compile with C++20 compilers (except clang which for some reason has yet to implement execution policies...)

This repository is accompanied by a blog post!

Results

Below are the results of running on my laptop (Apple M1 Pro), allocating 1e5 integers:

std::allocator<int>:
    Average: 0.221357ms (N = 10000)
      Total: 2213.57ms
        Min: 0.21ms
        Max: 0.392ms


aggressive_allocator<int, 65,536>:
    Average: 0.223744ms (N = 10000)
      Total: 2237.44ms
        Min: 0.211ms
        Max: 0.331ms


static_allocator<int, 32MB>:
    Average: 0.229698ms (N = 10000)
      Total: 2296.98ms
        Min: 0.211ms
        Max: 0.32ms


global_static_allocator<int> (256MB):
    Average: 0.22709ms (N = 100)
      Total: 22.709ms   # kind of irrelevant as N is smaller
        Min: 0.215ms
        Max: 0.243ms