Re: Fast GC allocation of many small objects

Sun, 01 Apr 2018 04:00:44 -0700 

On Saturday, 31 March 2018 at 20:17:26 UTC, Per Nordlöw wrote:
On Friday, 30 March 2018 at 23:09:33 UTC, Alexandru Jercaianu wrote: 
Hello,

You can try the following:
    struct Node
    {
        char[64] arr;
    }

     enum numNodes = 100_000_000;
void[] buf = GCAllocator.instance.allocate(numNodes * Node.sizeof); 
     auto reg = Region!(NullAllocator, 16)(cast(ubyte[])buf);


Thanks!
Is a `minAlign` of 16 recommended over 8 when allocating classes or arrays? 
Hi,
I'm glad it was helpful.
To be honest, I don't know which alignment would be better and it probably depends on your machine. This here says that 16 would work just fine [1] so I would go with that.
[1] - https://dlang.org/library/std/experimental/allocator/common/platform_alignment.html

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