Forwarded from squeak & vm lists in case its useful to others...
On Sun, Sep 18, 2016 at 5:11 AM, Craig Latta <craig@blackpagedigital.com> wrote:
>
>
> Hi--
>
>�� �� �� I've got the mass unused-method removal from Spoon working in Spur
> in Squeak 5.1. But now I have a juicy 12-megabyte chunk of free space in
> the middle of the 35-megabyte image that won't go away. There's just one
> Spur segment (I was expecting several?), with no pinned objects.
>
>�� �� �� Is there a known Squeak image with multiple segments? Is there some
> way to split a segment? Am I just supposed to play with the grow
> overhead and shrink threshold in the VM simulator, until the compaction
> I want is triggered?
>
>�� �� �� thanks!
> Craig Latta
---------- Forwarded message ----------
From: tim Rowledge <tim@rowledge.org>
Date: Mon, Sep 19, 2016 at 1:17 AM
Subject: Re: [Vm-dev] unused-method removal vs. Spur compaction
To: Squeak Virtual Machine Development Discussion
<vm-dev@lists.squeakfoundation.org >
Eliot mentioned using the vmaker sim to load the image and then save
it after removing the empty space. Ah, found it -
> Build a VMMaker image with image/buildspurtrunkvmmaker.sh and you can now use Spur32BitPreen to rewrite the image to be more compact.�� We can use this as part of the release process until Cl��ment and I have fixed Spur compaction.�� e.g.
>
>�� �� �� ��Spur32BitPreen new preenImage: '../oscogvm/image/trunk50'
>�� �� �� ��Looking for module�� ... loaded...computing accessor depths...done
>�� �� �� ��Looking for module�� ... loaded...computing accessor depths...done::::........................................... ..done.
>�� �� �� ��old heap size: 41,897,472�� �� �� ��initial new heap size: 26,818,472
>�� �� �� ��change: -35.99%
>�� �� �� ��final new heap size: 26,818,472 change: -35.99%
>
>�� �� �� ��Done!
>
tim