Grimm's take on the turntable anim script

Mon Jun 23, 2014 4:48 pm

Thanks

But this shouldn't be necessary as the garbage collector runs automatically. Unless you are doing some extreme memory or table usage, or Octane is interfering with the collection it shouldn't be needed. I will do some profiling but I'm thinking that these scripts don't use enough memory that makes it necessary to force a collection. Maybe Thomas can add his thoughts to this?

Jason

Mon Jun 23, 2014 8:20 pm

You're right Jason, there should be no need to kick the garbage collector from the script. The whole point about garbage collection is to make sure that programmers don't have to worry about this. Garbage collection itself doesn't come cheap either.

Of course, there's nothing against trying to optimize garbage collection for your script. More info on that here.

@gmillas: can you provide me with an example script where you see those big memory spikes?

cheers,
Thomas

Tue Jun 24, 2014 4:37 am

Thanks Thomas,

I ran a simple profile on the turntable script using Octane version 2.01 and these are the results in Kilobytes. All I did was put

Code: Select all

print(collectgarbage("count"))

in the code at various places.

Code: Select all

220.361328125    <- start of the script
281.533203125    <- start of animation preview
312.0107421875  <- cancel of preview
217.806640625    <- start of animation preview again, looks like the garbage collector ran
318.2080078125  <- cancel of preview
348.650390625    <- another animation preview
307.3134765625  <- cancel and maybe another garbage collection

This isn't probably a real good method to do the profile, but it at least give us an idea on what's happening as the script runs.

So, at the most, the memory usage rose up to 348 KBytes of memory but the garbage collector appears to be working as it should.

Tue Jun 24, 2014 7:11 am

did you run a whole render turntable with 1920x1080 and 400 frames ?

i did that and at 275 memory use of octane.exe was 2 gb ( with not much intesive scene i will post today a screene shot with that...