Re: memory usage query

[Markus Bergholz]

Am 06.11.2015 11:22 vorm. schrieb "JuanPi" <address@hidden>:
>
> Hi,
> What is the best way to know how much memory is being used by octave variables?
> whos doesn't do the trick since
>
> A = rand(1e3);
> whos
>
> Variables in the current scope:
>
>    Attr Name        Size                     Bytes  Class
>    ==== ====        ====                     =====  =====
>         A        1000x1000                 8000000  double
>
> Total is 1000000 elements using 8000000 bytes
>
> B = A;
> whos
> Variables in the current scope:
>
>    Attr Name        Size                     Bytes  Class
>    ==== ====        ====                     =====  =====
>         A        1000x1000                 8000000  double
>         B        1000x1000                 8000000  double
>
> Total is 2000000 elements using 16000000 bytes
>
> So it says we are using the double amount of memory, but afaiu B = A
> did not create a copy of A, so the reported memory assumes COW was
> executed.

When you're using Linux you can check how much memory is used by a PID number.
https://github.com/octave-de/macgyver_utils/blob/master/memory.m
But this is more generalized for the Octave process and not limited just to the workspace

>
> --
> JuanPi Carbajal
> Public GnuPG key: 9C5B72BF
> -----
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