What NGX_POOL_ALIGNMENT is used for ?

[Artyom Boyko]

Hi!
As far as i know, malloc return pointer aligned for using with standart data
types (int, long, struct, etc... usually 8 bytes).
Why is NGX_POOL_ALIGNMENT = 16 ? Why is that ? For 64-bit systems ?
I'm very interested in nginx internals, i can learn a lot from it.
PS: discussion at stackoverflow, people also don't know the reason of number
16.
http://stackoverflow.com/questions/6410609/when-do-we-need-to-use-posix-memalign-instead-of-malloc
Please help.
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