Deleting many objects is incredible slow

Support Basics & Interface
1

Hello, I realised that when I delete hundreds or thousands of objects, it could took minutes to perform.
Is there any way to speed it up?

Win 7 64 Pro, i7 4970

Thanks

2

open a new blend, append the objects you want, delete the old blend.

save the blend, generate thousands of objects, close without saving.

3

Very useful. Anything else?

4

blenders viewport is slow as a drunk snail, not much can be done about it.

5

I know that it is slow as hell, but I’m not sure it is viewport-related. But even for viewport speed up there are tricks (hiding outliner, etc.).

6

Pre-planning how to use the layers for different sets of objects helps with situations like this. Any time I’m going to create a lot of objects that go together, I give them their own layer, at least to start with. Better yet is to group them all so you can just select them all as one if you ned to.

7

Once had deletion performance issues myself (in a huge scene). If i recall correctly, this did the trick:

for ob in bpy.context.selected_objects:
    bpy.context.scene.objects.unlink(ob)
    if ob.users==0: ob.user_clear()

If so, make a simple python operator and bind to hotkey.

Hope it helps!

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