[Cuis-dev] Is this a Cuis or VM issue?

[Phil B]

Never mind... it's a single allocation that's failing because it's trying
to allocate 42GB!  Need to poke around to see why it's trying to do that...

On Fri, Mar 6, 2020 at 1:52 PM Phil B <pbpublist at gmail.com> wrote:

> The thing I'm not understanding is that assuming the worst case (on this
> all I can come up with is a perhaps a circular reference?), how is it even
> possible for the VM to be allocating/freeing all available memory (10+GB)
> in 1-2 seconds given that none of the individual objects in a fresh image
> are all that big?  Normally when I have an out of control process that OOMs
> in Cuis it takes 10+ seconds and you watch it happening at the OS level due
> to the fact that it takes time to allocate and even minimally do something
> with that much memory.
>
> On Fri, Mar 6, 2020 at 4:20 AM Hernan Wilkinson <
> hernan.wilkinson at 10pines.com> wrote:
>
>> I do not know how the ReferenceFinder works but it looks to me that it is
>> creating a lot of objects, maybe because of the type of search you are
>> doing... Looking for references to 1 for sure will generate a lot of
>> references
>>
>> I just debug it a little bit and it looks like the problem is not in the
>> scanning for references but in showing the result when expanding the first
>> node...
>>
>> On Fri, Mar 6, 2020 at 5:00 AM Phil B via Cuis-dev <
>> cuis-dev at lists.cuis.st> wrote:
>>
>>> 1) Start a fresh image
>>> 2) Open a Workspace
>>> 3) doit: ReferenceFinder openExplorerOn: 1.
>>> 4) The image appears to be gc'ing like crazy.  Minimize the results
>>> window as soon as you're able.
>>> 5) leaving that window open, again doit: ReferenceFinder openExplorerOn:
>>> 1.
>>>
>>> On my system with gigs of free ram and the image showing ~100 Meg used
>>> at the OS level, I get a low memory warning and a console
>>> message: sqAllocateMemorySegmentOfSizeAboveAllocatedSizeInto mmap: Cannot
>>> allocate memory
>>>
>>> Ordinarily I'd say this type of message is clearly a VM issue but with
>>> so little RAM actually being used I'm wondering if it might be a misleading
>>> error?
>>> --
>>> Cuis-dev mailing list
>>> Cuis-dev at lists.cuis.st
>>> https://lists.cuis.st/mailman/listinfo/cuis-dev
>>>
>>
>>
>> --
>>
>> *Hernán WilkinsonAgile Software Development, Teaching & Coaching*
>> *Phone: +54-011*-4893-2057
>> *Twitter: @HernanWilkinson*
>> *site: http://www.10Pines.com <http://www.10pines.com/>*
>> Address: Alem 896, Floor 6, Buenos Aires, Argentina
>>
>
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