SystemInformationDiagnosticsPlugin is slow due to sysinfo crate
#12848
Labels
A-Diagnostics
Logging, crash handling, error reporting and performance analysis
C-Bug
An unexpected or incorrect behavior
C-Performance
A change motivated by improving speed, memory usage or compile times
D-Modest
A "normal" level of difficulty; suitable for simple features or challenging fixes
S-Needs-Investigation
This issue requires detective work to figure out what's going wrong
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jannik4
added
C-Bug
alice-i-cecile
added
C-Performance
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Any indication if this is an upstream problem, versus something that Bevy is doing wrong? Is this just latency, or is there real work being done? |
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For the CPU usage there seems to be a Other than that I could not find information on how costly the refresh calls are. It might make sense to do the refreshes/measurements on an AsyncCompute task, so it does not block the frames. |
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I ran into this today so here's the tracy graph I was looking at. Enabling the plugin can drop fps to 30 or less, while disabling the plugin lets this particular app run at 200+ fps.
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alice-i-cecile
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S-Needs-Investigation
alice-i-cecile
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sysinfo crate
github-merge-queue bot
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Jun 10, 2024
# Objective Reading system information severely slows down the update loop. Fixes #12848. ## Solution Read system info in a separate thread. ## Testing - Open the scene 3d example - Add `FrameTimeDiagnosticsPlugin`, `SystemInformationDiagnosticsPlugin` and `LogDiagnosticsPlugin` to the app. - Add this system to the update schedule to disable Vsync on the main window ```rust fn change_window_mode(mut windows: Query<&mut Window, Added<Window>>) { for mut window in &mut windows { window.present_mode = PresentMode::AutoNoVsync; } } ``` - Read the fps values in the console before and after this PR. On my PC I went from around 50 fps to around 1150 fps. --- ## Changelog ### Changed - The `SystemInformationDiagnosticsPlugin` now reads system data separate of the update cycle. ### Added - The `EXPECTED_SYSTEM_INFORMATION_INTERVAL` constant which defines how often we read system diagnostic data. --------- Co-authored-by: IceSentry <IceSentry@users.noreply.github.com>
mockersf
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Jun 10, 2024
Reading system information severely slows down the update loop. Fixes #12848. Read system info in a separate thread. - Open the scene 3d example - Add `FrameTimeDiagnosticsPlugin`, `SystemInformationDiagnosticsPlugin` and `LogDiagnosticsPlugin` to the app. - Add this system to the update schedule to disable Vsync on the main window ```rust fn change_window_mode(mut windows: Query<&mut Window, Added<Window>>) { for mut window in &mut windows { window.present_mode = PresentMode::AutoNoVsync; } } ``` - Read the fps values in the console before and after this PR. On my PC I went from around 50 fps to around 1150 fps. --- - The `SystemInformationDiagnosticsPlugin` now reads system data separate of the update cycle. - The `EXPECTED_SYSTEM_INFORMATION_INTERVAL` constant which defines how often we read system diagnostic data. --------- Co-authored-by: IceSentry <IceSentry@users.noreply.github.com>
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Bevy version
0.13.1
Relevant system information
What you did
Add the
bevy::diagnostic::SystemInformationDiagnosticsPluginplugin.What went wrong
The
diagnostic_systemof theSystemInformationDiagnosticsPlugintakes around 4ms on my system, which makes it unsuitable to use while measuring performance.Additional information
Noticed this, as I used this with
iyes_perf_uiand could not get more than 200FPS.The text was updated successfully, but these errors were encountered: