My JavaFX app is managed by efficiency cores once reduced in tray icon.

[Davide Perini]

As title.
I'm pretty sure that my JavaFX app is managed by efficiency cores once
reduced in tray icon since its performance drops significantly,
if I open a window and leave it open, the app goes at max speed on
performance cores.

Is there a way to set the app runs on performance core even without
leaving a window opened?

Thanks
Davide

[Tres Finocchiaro]

I'm pretty sure that my JavaFX app is managed by efficiency cores once
reduced in tray icon since its performance drops significantly,
if I open a window and leave it open, the app goes at max speed on
performance cores.

Hi, there are many factors at play with a JavaFX application.  In my experience, the JavaFX stage performs significantly differently when certain components are not "shown", so this may be a better question for the JavaFX community.

For example, using a small animation example with Platform.setImplicitExit(false);, the CPU usage significantly drops when the stage is hidden.
https://www.tutorialspoint.com/javafx/javafx_animations.htm

Is there a way to set the app runs on performance core even without
leaving a window opened?

Although what you're describing may be possible with JNA, since JavaFX has strong ties to the Java community, this may be better asked in FX-specific channels.

As a personal note -- and offtopic to this mailing list -- I've found myself leveraging custom "Monocle" builds of JavaFX for when the stage is hidden.  I've had bad experiences with a hidden stage otherwise.  I'm not sure how helpful this is though, considering Monocle's original intent was for JavaFX instances that didn't have a UI at all.

[L Will Ahonen]

Hi,

Are you sure you're not dealing with the foreground priority boost from Windows? https://learn.microsoft.com/en-us/windows/win32/procthread/priority-boosts

Does your app retain the high priority if you keep the window un-minified, but leave it hidden behind other windows?

Cheers,

Will

[Davide Perini]

I'm not sure how to check it, the only thing I know is that while the app runs in background in the tray icon the performance drop after a while,
if I open a window, and leave it opened, the performance does not drop.

How can I check if it's the foreground priority boost from Windows and if it's that the case,
how can I tell to windows to stop setting my threads in a low priority state? :)

Thank you very much for the answer.

Davide

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[Václav Haisman]

On 24. 05. 23 21:09, Davide Perini wrote:

I'm not sure how to check it, the only thing I know is that while the app runs in background in the tray icon the performance drop after a while,
if I open a window, and leave it opened, the performance does not drop.

How can I check if it's the foreground priority boost from Windows and if it's that the case,
how can I tell to windows to stop setting my threads in a low priority state? :)

It seems to me you have to manually change the QoS for the process. See https://learn.microsoft.com/en-us/windows/win32/procthread/quality-of-service for QoS information. It looks like you would have to call SetProcessInformation with ProcessPowerThrottling and StateMask=0. I have no idea if JNA supports these calls.

To view this discussion on the web visit https://groups.google.com/d/msgid/jna-users/770ec622-ff43-9d69-8b9b-27079ab0ed6e%40dpsoftware.org.

-- 
VH

[Davide Perini]

Is this something similar to manually set the process priority in the task manager?
I maean this thing:
https://windowsreport.com/task-manager-set-priority/

if yes, it seems that highering the priority does not help, only opening a window on my app helps.
no matter if the windows is behind other windows.

Thanks
Davide

To view this discussion on the web visit https://groups.google.com/d/msgid/jna-users/561c225f-3a40-eda6-89d7-f3d3a6e8caf8%40gmail.com.