Finding Octave's memory use breakdown

[LachlanA]

Greetings all,

Is there a way to find out where Octave is using memory?  I often find that
Octave is using say 2GB, but "whos" shows only a few hundred megabytes in
variables.  I assume that much of it is in the libraries, some is in
Octave's own code, some of it is in overhead for variables (like field names
in an array of structs), some of it is in parse trees, etc..

The thing that triggered this post was Kai's suggestion to replace printf by
a .m file.  The main advantage I can see is to reduce the size of the
executable, which got me wondering where the memory all goes.

Similarly, I've heard that allocating memory was one of the big consumers of
time.  Does anyone have a breakdown of what fraction of allocations come
from each class of memory use?

I used to think that Valgrind would be able to tell me that sort of thing,
but I've never found the right invocation.

Thanks,
Lachlan



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