[Vm-dev] Re: Too many full GCs in Cog/Spur ... while just drawing GUI ...

[Levente Uzonyi]

No, it's not a difference between platforms.
With fewer opened windows the number of garbage collections increases. 
This is because rendering will happen more often. When the VM runs out of 
memory primitive 71 in #basicNew: will fail and it'll send
#handleFailingBasicNew:. That method will retry primitive 71, which will 
fail again, and then it'll do a full gc to make room for the new object. 
Only when it's not possible to make room for the new object by collecting 
the garbage will the VM allocate more memory.
Forcing the VM to allocate more memory, by tweaking parameter 25, will 
decrease the number of GCs, though I wasn't able to get it down to 0, 
because the code became way too snappy and it quickly reached the new 
memory limit.

Levente

On Thu, 7 Apr 2016, Levente Uzonyi wrote:

>
> My bad, vertical reading...
>
> So, with 75 open windows, main window larger than 1024x768, I still get 0-2 
> as result. Perhaps it's a difference between unix and windows vms.
>
> Levente
>
> On Thu, 7 Apr 2016, marcel.taeumel wrote:
>
>> 
>> Hi Levente,
>> 
>> it's in the code: 1024 x 768.
>> 
>> These tools are opened: {String. Morph. Socket. Rectangle. Form} do: [:ea |
>> ea browse].
>> 
>> And a workspace.
>> 
>> Best,
>> Marcel
>> 
>> 
>> 
>> --
>> View this message in context: 
>> http://forum.world.st/Too-many-full-GCs-in-Cog-Spur-while-just-drawing-GUI-tp4888823p4888846.html
>> Sent from the Squeak VM mailing list archive at Nabble.com.
>> 
>