Re: [Pharo-dev] is there a way to know when a GC is happening?

Hi Aliaksei, In VW, scavenges are done automatically by the VM, but all heavier-weight GC is controlled by the image, through a MemoryPolicy object. In the GemStone client for VW we provide a memory policy that discourages GC during times when our mapping dictionaries are strong, deferring

Re: [Pharo-dev] is there a way to know when a GC is happening?

Maybe it's undecidable. Now it happens when a memory space is full, and I think that memory spaces aren't dynamically configurable.     Davide On 10/09/2020 10:41, Aliaksei Syrel wrote: Hi I wish there was a way to control *when* full GC is allowed to happen. For example, I would prefer GC

Re: [Pharo-dev] is there a way to know when a GC is happening?

Hi I wish there was a way to control *when* full GC is allowed to happen. For example, I would prefer GC to occur while the UI rendering loop is paused and not in the middle of the frame resulting in sometimes sluggish animations in the case of large images. Thank you On Wed, 9 Sep 2020 at

Re: [Pharo-dev] is there a way to know when a GC is happening?

If Pharo's gc algorithm is concurrent => maybe yes, otherwise surely no : if I'm not wrong gc starts inside VM when checking allocation spaces during a basicNew or alike. And the VM seems stuck, at that moment. One can try to create an ephemeron and check it every 100-500 ms, refreshing it if

Re: [Pharo-dev] is there a way to know when a GC is happening?

On 9/9/20 8:43 PM, Esteban Maringolo wrote: On Wed, Sep 9, 2020 at 11:58 PM Eliot Miranda wrote: In VisualWorks, for example, a WeakArray is primed with an Object instance, and this gets collected every scavenge. So the WeakArray is notified. From this VW builds a notification system. I

Re: [Pharo-dev] is there a way to know when a GC is happening?

On Wed, Sep 9, 2020 at 9:49 PM Esteban Maringolo wrote: > On Wed, Sep 9, 2020 at 11:58 PM Eliot Miranda > wrote: > > > In VisualWorks, for example, a WeakArray is primed with an Object > instance, and this gets collected every scavenge. > > So the WeakArray is notified. From this VW builds a

Re: [Pharo-dev] is there a way to know when a GC is happening?

On Wed, Sep 9, 2020 at 11:58 PM Eliot Miranda wrote: > In VisualWorks, for example, a WeakArray is primed with an Object instance, > and this gets collected every scavenge. > So the WeakArray is notified. From this VW builds a notification system. I guess this is how VisualWorks changes its

[Pharo-dev] is there a way to know when a GC is happening?

Hi I would to be able to see when an incremental GC is happening. is there a way to know when a GC is happening? S. Stéphane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50