Re: Finding Octave's memory use breakdown

[John W. Eaton]

On 04/24/2016 11:42 PM, LachlanA wrote:
> 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..

What are you looking at to determine that the overall memory usage is 
2GB?  If I start Octave (running the GUI and built from current 
development sources with debug symbols) it looks to me like it takes 
about 100 MB to run, with 80 MB of that being shared.  That's the 
resident and shared memory sizes reported by top.  The total virtual 
size is a little over 1 GB.  That doesn't seem terribly large.  Are you 
concerned that it is?

> 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.

You might slightly reduce the size of the executable, but there are 
other considerations, which I have already covered.  I really don't 
think it is worth changing things for this function.

jwe