I think it's related to the segmented memory model of Spur, which uses 
more memmory than the the compact model of pre-Spur Squeak.
I think in Spur there should be a primivite which condenses all 
(non-pinned) segments, and minimizes their number. I'd probably be worth 
using such thing on "Save and Quit", because that way all pinned objects 
could be condensed too.

Levente

On Thu, 23 Jul 2015, tim Rowledge wrote:

>
> On 23-07-2015, at 11:17 AM, Herbert König <herbertkoenig at gmx.net> wrote:
>
>> Hey, great!
>>
>> downloaded it on the Pi A+ installed my trusty 24/7 cat surveillance app and it worked.
>> CPU usage went down from 50 to 40%.  It exercises BitBlt, Collections, file I/O incl. GPIO, OSProcess and CommandShell
>> Memory went up from 52M to 75M which is critical as I use the PiNoir Camera.
>
> Well the base image is about 20M bigger than the base 4.5 one for some reason, so that explains most of it. The VM is a touch bigger since it has the Cog translation system now, so you should notice a dramatic speedup.
>
>
> tim
> --
> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
> Useful random insult:- He has a tenuous grip on the obvious.
>
>
>
>