Client Performance Graphs have No Data

[boatbomber (Zack_Ovits)]

This is not a new bug (has been happening ever since the page was launched) but I didn’t get around to reporting until now.

When I attempt to view Client Frame Rate, Client Memory Usage, or Client Memory Usage Percentage for Lua Learning, I always receive “No data for selected period.”

The other charts work as expected.

I don’t have a repro, but I suspect it’s likely an issue with some of the hacky ways I optimize for 2D rendering. Those tricks are documented here: Creating the most optimized Roblox game- runs at 6000+ FPS!

@boatbomber

Removing 3D and Physics Work

This project is UI only. There is no physics, no 3D world, no characters to run around. That means it should run fast as hell. However, the Roblox engine has no concept of UI only games- so we have to do our best to minimize the impact of the pointless 3D work that is done in the background.

• Hello darkness my old friend: We set our lighting to the simplest possible- voxel tech, no shadows, all black color values, and brightness 0.
• Floating Point: We set gravity to 0, making it so that there are absolutely no forces in play for the physics engine.
• Empty inside: We do not spawn in characters for the players, and the world has no geometry. There is nothing but sky.
• Narrow minded: We set our 3D camera FoV to 1, the lowest it supports. This way, we’d render only a tiny sliver of the aforementioned sky.
• Blindfolded: We set our camera CFrame matrix to all zeros, causing the camera to render pure black as it is distorted down to nothingness.
• No thank you: Roblox injects default scripts, such as camera controls, character controls, chat, and more. We override these by replacing them with empty directories or (in cases where we can’t override) by destroying them on startup.

Page URL: https://create.roblox.com/dashboard/creations/experiences/537069295/analytics/performance?tab=client

[signal_zzz]

Looking into it Zack, thanks for reporting

[fishrotR]

Hi @boatbomber ,
After investigation, we found the these perf data won’t be sent our for games configured like yours, where there is no player. We are discussing internally how we could support performance graphs for a game like this properly.

Thanks,
FishrotR

[boatbomber (Zack_Ovits)]

@fishrotR

where there is no player.

What do you mean? game.Players is populated with Players, of course. Do you mean spawning character avatars into Workspace? Why would avatars be relevant to tracking and reporting frame rates and memory usage?

[boatbomber (Zack_Ovits)]

Checking back in. Can you elaborate on why not spawning an avatar would prevent analytics? Would it be resolved if I spawned one, killed them, and never let them respawn?

[boatbomber (Zack_Ovits)]

Hope you had a nice winter break! I want to make sure this didn’t get lost over the holidays. Is there any additional information you can share?

[boatbomber (Zack_Ovits)]

I added this snippet:

and shortly after publishing, I now have graphs beginning to populate.

The fact that avatars are needed to gather memory analytics still baffles me, but at least I have data now.

[XAXA]

Can confirm that spawning the character and then deleting them afterwards is a workaround for this.
I dropped an update a few days ago that remove the usage of Player.Character, and then I dropped another update a few days later that spawns and then deletes the character.