[erlang-questions] mnesia memory usage on 32 and 64 bits machines

Attila Rajmund Nohl <>
Fri Dec 31 13:01:24 CET 2010


2010/12/31, franz <>:
[...]
> On one hand this makes sense, because as far as I know a word of mem on
> a 32bits machine is 4 bytes, 8 on a 64bits machine. But does this mean
> that having a 64 bits kernel doubles the memory usage?!?

Actually this doesn't depend on the kernel, this depends on the Erlang
VM (i.e. userspace) using 32 bit or 64 bit. Generally 64 bit
applications use a lot more memory.


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