I know this question has been asked many times, but Iv'e heared many answers
for this question, so I don't know what to believe.
How much memory does a reference type occupies in the manged heap?
Some say 4 bytes only (for the virtual table, or Type instance reference)
and some say 8 bytes (vtable + SynchBlock?).
So, which is it?
Thanks.

Amir Shitrit wrote:

If you've heard many answers, why should you think that this time
you'll get an answer that you believe?

It's vtable and syncblock, btw.

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Amir Shitrit <AmirShitrit (AT) discussions (DOT) microsoft.com> wrote:
8. The easiest way to check this is to check used memory, create a
million object instances (keeping a reference to them, eg in an array),
then check used memory again (with GC.GetTotalMemory). It's not
entirely reliable - things like writing out the initial memory will
force the Console class to load, adding to the total memory etc) but if
you create enough objects the trend is very obvious.

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