Ingame performance metrics for user content

[gentlecolts]

Is your feature request related to a problem? Please describe.

A recurring issue with Resonite is the performance impact of user-generated content, especially as it scales. It'd be nice if we had some on-demand tools for measuring these things, performance heuristics for content/avatars/worlds, etc

Describe the solution you'd like

There's a LOT that can be done here, so please, feedback and suggestions for sure, but to get things started:

• it'd be nice to have a tool for measuring the impact of a given hierarchy. Perhaps the inspector could have a button for measuring, you hit it, and it gives you measures of how much update/frame time is spent in from the current root slot down, ram/vram usage of the slots, etc. These metrics could, as an example, be colored in a way that gives users a sense of good/bad
• With some measurement framework in place, perhaps when an avatar is saved, these measurements are run on it for, say, about 5 seconds, and that metric could be then tied to the avatar, perhaps combined with more static measures like component count (maybe biased by some static per-component heuristics?), vram usage, etc. This would allow users to then say that they don't want to view avatars that are above a certain threshold
• Similar metrics could be used for ranking worlds as well, giving users a sense of "weight" of the world before they join it

Very important in all of this, and in any solution implemented by the team, is giving users transparency into what is actually affecting their content's performance so they can iterate and improve without having to just guess. Also important is making sure that metrics reported back to the user, and used for ranking, are actually relevant. For example, one cannot simply say high mesh count is bad, because one can separate meshes to minimize the impact of shape keys, while allowing batching to mitigate the drawcall impact.

Describe alternatives you've considered

This is a rather open-ended request, other suggestions are of course very much welcome

Additional Context

zangooseoo

[shininghero]

While we do have some of this on the debug screen, it definitely needs work in terms of presentation. Personally, I'd like to see a pie chart with the following values for CPU stuff:

• Protoflux evaluation time
• IK calculation time
• Non-IK object transforms (dynamic bones, etc.)
• Idle CPU time

These values alone can indicate where potential bottlenecks can occur, and allow both map makers and session runners to adjust accordingly.

[ko-tengu]

I would love a profiler like this for RAM use especially. A pretty common issue I run into is avatars that are far larger than the users realized. Unity's got a good profiler in the editor that could be a good base to copy, or even something like VRchat's avatar detail pane.