On Thu, Jul 20, 2017 at 12:37 PM, Timo Paulssen <t...@wakelift.de> wrote:
> On 19/07/17 21:52, Gabor Szabo wrote:
>> Hi,
>> is it possible to get the size of memory used by the current Perl 6
>> process? (From inside the code)
>> Is it possible to get the size of the individual variables?
>> Gabor
> I'm not aware of something cross-platform that rakudo offers for memory
> use of a process, and getting the size of individual variables is an
> extremely hairy topic.
> You can use the --profile=heap target to get full snapshots of all
> objects in memory whenever GC kicks in, and go through it with the
> moar-heapanalyzer tool jnthn made.
> I had a pull-request open for an op i called "vmhealth" that would
> output a bunch of statistics including what the different allocators are
> doing, but progress halted when I didn't get input or came up with good
> ideas for what else to include. Here's the PR:
> https://github.com/MoarVM/MoarVM/pull/536
> The reason why "memory in use" is difficult is because of many things
> not having a single owner. Imagine an array, where you could have bound
> the individual containers to any amount of lexical variables, for example.
> Also, if there's exactly one Rat in the whole program, do you count the
> presence of the class itself as being used by the variable that holds
> that Rat?
> hope that sheds some light
>   - Timo

Thanks for the explanation. I hope your PR will make progress.

BTW the reason I asked this is as I think there is a memory leak
somewhere in Bailador
and I was hoping to use this to track it down. Any Perl 6 or Rakudo
specific suggestions for that?


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