Maxime's micro allocation benchmark much faster ?

[Laeeth Isharc via Digitalmars-d-learn]

I was curious to see if new DMD had changed speed on Maxime 
Chevalier-Boisvert's allocation benchmark here:

http://pointersgonewild.com/2014/10/26/circumventing-the-d-garbage-collector/

I haven't had time to look at the Phobos test suite to know if 
this was one of those that were included, but the difference 
seems to be striking.  I am using two machines in my office - 
both of which are old x64 boxes running Arch Linux and are quite 
old (8 Gb RAM only).  Same manufacturer and similar models so 
should be same spec CPUwise.  Have not got time to install and 
compare different versions of dmd on same machine, so fwiw:


1mm objects
-----------
dmd 2.07 release: 0.56 seconds
dmd 2.067-devel-639bcaa: 0.88 seconds

------------
dmd 2.07 release: between 4.44 and 6.57 seconds
dmd 2.067-devel-639bcaa: 90 seconds


In case I made a typo in code:

import std.conv;

class Node
{
	Node next;
	size_t a,b,c,d;
}

void main(string[] args)
{
	auto numNodes=to!size_t(args[1]);

	Node head=null;

	for(size_t i=0;i<numNodes;i++)
	{
		auto n=new Node();
		n.next=head;
		head=n;
	}
}