I made some testing.
Noticed that largest free block is still getting smaller every time, and memory is slowly eaten. Loading those pages about a dozen times reserves about 7mb ram. Does it free memory at all??? Amiga.org loaded I have 35mb free ram, test.html loaded I have 35mb free ram. Going amiga.org again eats memory less than 1mb. First time loaded amiga.org uses about 5-7mb ram.
So what it keeps on ram?
Are you using gcc to build this beastie Chris?
When I was porting Quake 2 to AGA I discovered that the standard memory allocation functions 'malloc/free' are buggy and would not always release allocated memory (I was compiling with -noixemul BTW).
The solution (which came to me after sacrificing many virgins), was to wrap my memory allocation functions and redirect to the Amiga OS standard AllocVec/FreeVec functions.
If that doesn't work you'll need to write your own hunk allocation memory manager.
http://gameprogrammingpatterns.com/object-pool.html
