[riffraff]

I have no idea of the size in other language implementations, but notice 40 bytes is on x86-64, on 32 bit it's either 20 or 24.

[joevandyk]

this is why running large ruby apps on 64 bit OSs can take up a lot more memory than 32 bit.

[riffraff]

isn't that true of most platforms? I know the JVM has compressed OOPS to limit this issue, but I am not aware of similar things elsewhere.