[Cuis-dev] 50 % slow down

Juan Vuletich juan at cuis.st
Tue Oct 28 06:09:16 PDT 2025


Hi Hilaire,

(inline)

On 2025-10-26 7:33 AM, Hilaire Fernandes via Cuis-dev wrote:
>
> Hi,
>
> This morning, I updated my Cuis-Smalltalk-dev working directory. A new 
> VM was fetched along a few additional changesets to Cuis.
>
> I fired up the installation of my DrGeo IDE against this latest Cuis..
>
> I tested DrGeo under this new setup, it works fine but I observed  a 
> sub-nominal graphic rendering speed. At least a 50% slowdown compare 
> to a DrGeo build against Cuis 7.3#7158.
>
> I observe this slow down in DrGeo window but not with other window as 
> the browser. So may be VectorGraphics related...
>

Yes. The Linux-x64 VM was missing the VectorEnginePlugin, so it was all 
drawn in Smalltalk. Much slower. Already posted the plugin to the repo.


> I then cross run my DrGeo builds and VMs. The result is interesting.
>
> The DrGeo with latest Cuis image and executed with the former VM (at 
> Cuis7.3#7158) is even slower!
>

Some changes in the VM and the image needed to go together. So, yes, 
this could happen. Not sure about the details, though.


> When I executed the DrGeo build with Cuis7.3#7158 with the newer VM, 
> it is even slower, the slower of all.
>
> I am confused.
>
> Here is the build image to test it
>
> https://www.dropbox.com/scl/fi/bu2wvwt4z4bx3d0qphql5/CuisDrGeoSlow.zip?rlkey=f0phlp38c6llm5rcw633z7d1a&st=flhblb5o&dl=0
>
> Thanks
>
> -- 
> http://mamot.fr/@drgeo
>

Future VM builds will have the plugin already integrated. Apologies for 
the inconvenience.

Cheers,

-- 
Juan Vuletich
www.cuis.st
github.com/jvuletich
researchgate.net/profile/Juan-Vuletich
independent.academia.edu/JuanVuletich
patents.justia.com/inventor/juan-manuel-vuletich
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