@Bastien Montagne (mont29): Today I´ve tested your hidden experimental speed-up for delete hierarchy with two of our production files.
Scene 1:
Size: 2,12GB
18.457,133 Faces
18.457,134 Tris
6590 Objekte
4043 Objekte deleted

Thats realy great!

With the todays build (e57ee5934a30) it works fine.

@Bastien Montagne (mont29) : Thank you very much! I will test it!

@Bastien Montagne (mont29) : Thanks for your answer. As I wrote in the description, I tried to create a simple scene that mimics the scenes we use every day in our company. I can´t send you a 2GB blend file with client data. Therefore a used the default cube subdivided it and used the array modifier to create an amount of objects, to get an object count like in our scenes. The other rows of cubes were only linked copies, to hold the filesize low.
As brecht wrote it is apparently a limitation of the blender code architecture, that deleting takes a lot of time, if you have a high object and polycount in a scene.

Here is as screenshot of the GPU+CPU rendering.

I have a similar problem with denoising.
If rendering with the cpu denoising happens.
If rendering with the gpu denoising doesn´t happen.
If rendering in mixed mode (GPU+CPU) only the tiles rendered by the cpu get denoised.

@John (jfraser): I testest it at work. My computer there is a AMD Threadripper 1950X 16Cores@3,4GHz 64GB Ram using the build from yesterday.
Now I tested it at home. At my desktop Intel Xeon E5-2697v3 (2x14Cores@2,6Ghz 128GB RAM) it takes about 12seconds deleting the hierarchy using the build from today and the scene from above.
It is weird that at work it takes so much longer to delete the hierarchy?!

I tested yet another file.

I tried it also on another computer with fresh user settings and reseted to factory defaults. The problem is still there.
It is strange, the viewport update works if Studio_052 is set as World, but if you switch to Studio_053 as World the viewport update isn´t working.
There is only an update once in Studio_053 World when you switch from Studio_052 to it. But once Studio_053 is set, changing for example the strength or rotating in the Mapping Node, has no effect at all.
I tried as described above.

I just created another Blender Scene with an simpler world node setup.

In my opinion in the state the preview is now, it is nearly useless because you only see a very small part of the world. :-(

Deleting the Render Layers and File Output node and recreating the connections, then saving the file, helps to get rid of the problem.
When reopening the file, the connections and sockets are shown.
Maybe because of the many changes in Blender, it can´t be reproduces how I came to the state of the file.
I think you can close the ticket?!

I created the scene a few weeks ago with an older Bleder beta version. Which exactly I don´t know.
Saving and reopening this scene with the Blender version from today isn´t solving the problem.

I tried the todays build and every scene that crashed in the build from yesterday, can now be rendered again in the viewport. Closing, thanks!

Like I said, everything works fine in Blender Version 7d4d9e9dbd3 (13.12.2018) and before. I tried lots of other files I created in the past weeks. Many of them are crashing now when I try to Cycles render in the Viewport with the Blender versions past 13.12.2018.

Hello, here are the debug infos.

In todays build blender-2.80.0-git.4c31bed6b46-windows64 the problem is solved. Thanks

Sorry, tried it again and now it is working! You can close the thread!

You still cannot edit UVs with the todays build (blender-2.80.0-git.27cccaeccd2-windows64). You cannot move, rotate or scale the UVs.

Cannot confirm in blender-2.80.0-git.4c6e7ef11f3-windows64 and blender-2.80.0-git.9c8d31520db-windows64

2. We move the collections and objects visibility to be per-viewport.
3. In the viewport collection popover we control only the per-viewport collection visibility (we can still indicate if there is any object in this collection that is invisible).

I can confirm the crash also with todays build blender-2.80.0-git.26b1aa99436-windows64.

After reseting to Factory Settings the behaviour was gone! Thanks for the advice!

But maybe it becomes too complex, if you have visibility per viewport and visibility per viewlayer? And you also have the Collection viewlayer exclude/include option.
To make it less complex, maybe you only want to allow to exclude/include etc. collections in viewlayers?!

@Dalai Felinto (dfelinto), Isn't it the concept of viewlayers to show diffrent subsets of object? So you can deflect what will be renfered from what you see in the viewport. So I think the visibility which is changing all viewports, should be per viewlayer.

As they are called viewlayer now, maybe you wish some sort of visibility per viewlayer?! Otherwise it woulf only be a renderlayer as in Blender 2.79.

After reading the proposal carfully I now have some questions.

Sounds good, maybe you can then add a button somewhere in the viewport for new users (like the aktive camera icon in the top right)?!
@Dalai Felinto (dfelinto): As I understand the prosal, the visibility of objects in viewlayers would then be controlled by the set exclude/dynamic override of collections?

If the / key would work as a toogle wouldn´t it be more effective in case of performance? I don´t know how blender is handling this. Doing an inverse selection operation followed by a hide operation sounds compute intensive, if you have lots of objects in the scene. I work in the automobile industrie where I have 10000+ geometries in blender. In my opinion local view should be with good performance.

@Dalai Felinto (dfelinto), thanks for you answer, I trust your proposal to be useful in every days work. Thanks for you your hard work! Can you implement the search option for hidden/invisible objects in the outliner, or is it a paper cut? In the moment there are only search options for visible, all, active and selected objects.

@Brecht Van Lommel (brecht), thanks for your advice. Will the screen icon in the outliner be available if the proposal in this thread is realized? Would it be hard to implement a search option for hidden/invisible objects in the outliner. In the moment there are only search options for visible, all, active and selected objects?

The local view (isolate selected) feature is very important!
Please make the visibility/local view setting as it is useful! When you have lots of geometry in the scene you often need to just focus on one object.
Make it at least like in Blender 2.79 where hitting the / key sets the object to local view, when you hit the / key you get out of local view. Objects that were hidden in the viewport remain hidden.
In the moment in blender 2.80 you have to unhide everything (alt h) to get out of local view, which ruins the scene configuration.

The same happens when I try to open blender blender-2.80-4503c96a175-win64, Nov 13 2018

In the Screenshot you can see as described above that, I´m in the cone View Layer and the option Render Single Layer is set to on.
But it renders the Cube View Layer not the View Layer that I´m currently in.
If you switch to the Cylinder View Layer with Render Single Layer on it again renders the Cube View Layer if you hit Ctrl+F12.

Try this file. The are three View Layer called after the primitives that are inside.
Hit Render Animation (Ctrl-F12)
In the image editor you can see all three View Layer rendered.
Select the cylinder and move it slightly to the left.
Switch to View Layer Cone and move it also a little bit to the left.
Switch to View Layer Cube and move the cube to the left so that you can see a difference to the old rendering.
While you are in the Cube View Layer switch the option Render Single Layer on.
Switch to the Cone View Layer - here the option Render Single Layer is now also on.
Hit Render Animation (Ctrl-F12)
Not the Cone View Layer where I´m in, but the Cube View Layer is rendered! Why?

Yes I know how it should work. But if you switch to the attached scene scene to the View Layer.001 with the option Render Single Layer on, Blender is rendering not that layer, but the first View Layer because the option is also set there and the first View Layer is only rendered.
So to say it clear. If the option is on it only renders the first renderlayer in the row, whatever View Layer you have currently active in your view and want to render.
It is not possible to render only a special View Layer!
I hope you understand what I mean?

@Clément Foucault: In the build from today blender-2.80.0-git.3c8c1841d72-windows64 the problem still persists.

Brecht, would it be possible to allow parenting by draging and droping mulible objects in the outliner like it is possible to drag and drop multible objects into collections? That would be really great and makes Blender more consistent!

The selection of the primitives works normal as expected in the latest builds. If you click on the same location the selection cycles through every sphere, also in xray view-mode.