Re: Increasing GNAT's heap

[Eryndlia Mavourneen <eryndlia@gmail.com>]

On Wednesday, November 13, 2013 10:07:14 AM UTC-6, Eryndlia Mavourneen wrote:
> On Wednesday, November 13, 2013 9:39:23 AM UTC-6, Oliver Kleinke wrote:
> 
> > > I don't believe it has anything to do with GCC. It looks clearly like
> > > GNAT issue which, BTW, also leads to extremely sluggish compilation.
> > > After all, if you allocate 2+ GB of memory you have to fill it with
> > > some junk and that takes time, much time.
> > 
> > I suppose this has to do with swapping/paging, so the sluggishness might
> > not be GNAT's fault.
> 
> I was thinking along these lines.  It is important to remember that the program being run dictates much of what occurs with paging.  Data references aside, the locality of execution has a great deal to do with the amount of paging and swapping that occurs.  
> . . . 
> -- Eryndlia Mavourneen (KK1T)

Actually, I meant to say "paging" and not "paging and swapping," although swapping can be partially controlled by the process' priority relative to the others in the system with the same OS mode (kernel, user, etc.).

-- em