'Window Management'-Setting decreases UI performance in certain cases

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Kademlia

8 discussion posts

Hey, got another one that was bugging me for a long time :laugh:

The "Window Management"-Setting will cause Program-UIs to be sluggish depending on the amount of entries within the given window.

This problem is very noticable in the development IDE 'Eclipse' in my case and a couple hundred/thousand files opened. Without the "Window Management"-Setting everything is fine.

It seems like your Window-Management code knows about entries within a given window and will iterate over these sub-entries, as there is a direct link between the performance and the amount of entries.

Because this is harder to explain I recorded a short video:
https://www.youtube.com/watch?v=KQTZ5BkwHLA

Windows 10 / DisplayFusion Pro 10 / Beta 24 (I have noticed this behaviour for a couple of years)

• Attachment: Screenshot 2023-03-26 233727.png [132,835 bytes]

Screenshot 2023-03-26 233727.png

• Attachment: Screenshot 2023-03-26 233830.png [45,179 bytes]

Screenshot 2023-03-26 233830.png

Mar 26, 2023 (modified Mar 26, 2023) • #1

If you leave the "Window Management" setting enabled but disable hooks in the Advanced Settings, does that also make it go away?

Mar 28, 2023 • #2

Kademlia

8 discussion posts

Disabling either application-Hooks or shell-Hooks will make it fast again, but in both cases the functionality of maximizing to a virtual-monitor does no longer work. (Tested on Beta 25).
(Disabling polling had no effet)
Futher I tested the following:

Only one Monitor connected has the same problem
Making the window smaller (less entries visible in the list) will make it faster again
Scrolling down will increase CPU-Usage of eclipse to ~1full core; not from Displayfusion
Disabling DisplayFusion and scrolling will not increase CPU-Usage of eclipse
Log level for Hooks (3) see below; 10 seconds of ~~scrolling~~ pressing down button (polling hooks and taskbar hooks disabled), LogLevel:1 otherwise

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2023/03/30 03:21:23.4777##_##INFO:L1##_##displayfusion.exe:10244##_##DFHookManagerWindow.WndProc:WndProc_ShellHook:234##_##-##_##Focus Change [WrongWindowClass:SWT_Window0] Handle: 0x00021242##_##-
2023/03/30 03:21:23.4786##_##INFO:L1##_##displayfusion.exe:10244##_##DFHookManagerWindow.WndProc:WndProc_ShellHook:234##_##-##_##Focus Change [WrongWindowClass:#32770] Handle: 0x00090dc0##_##-
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2023/03/30 03:21:28.0633##_##INFO:L1##_##displayfusion.exe:10244##_##TaskbarManager:TaskbarRemoveAll_TASKBARMANAGERTHREADONLY:1982##_##-##_##Removing All Taskbars: TaskbarManager:ProcessTaskbars:NotEnabled:TaskbarManager:TimerUpdateTick##_##-
2023/03/30 03:21:28.7910##_##INFO:L1##_##displayfusion.exe:10244##_##DFHookManagerWindow.WndProc:WndProc_ShellHook:234##_##-##_##Focus Change [WrongWindowClass:MultitaskingViewFrame] Handle: 0x000c0de2##_##-
2023/03/30 03:21:28.8623##_##INFO:L1##_##displayfusion.exe:10244##_##DFHookManagerWindow.WndProc:WndProc_ShellHook:234##_##-##_##Focus Change [WrongWindowClass:SHELLDLL_DefView] Handle: 0x00011092##_##-
2023/03/30 03:21:28.8623##_##INFO:L1##_##displayfusion.exe:10244##_##DFHookManagerWindow.WndProc:WndProc_ShellHook:308##_##-##_##Skip: Trigger:WindowFocused: 70ms, 0x00061072##_##-
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2023/03/30 03:21:28.8629##_##INFO:L1##_##displayfusion.exe:10244##_##DFHookManagerWindow.WndProc:WndProc_ShellHook:308##_##-##_##Skip: Trigger:WindowFocused: 71ms, 0x00061072##_##-
2023/03/30 03:21:28.8632##_##INFO:L1##_##displayfusion.exe:10244##_##DFHookManagerWindow.WndProc:WndProc_ShellHook:234##_##-##_##Focus Change [WrongWindowClass:CabinetWClass] Handle: 0x00061072##_##-
2023/03/30 03:21:28.8632##_##INFO:L1##_##displayfusion.exe:10244##_##DFHookManagerWindow.WndProc:WndProc_ShellHook:308##_##-##_##Skip: Trigger:WindowFocused: 71ms, 0x00061072##_##-
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2023/03/30 03:21:29.5708##_##WARN:L1##_##displayfusion.exe:10244##_##TaskbarManager:TaskbarRemoveAll_TASKBARMANAGERTHREADONLY:1973##_##-##_##[TaskbarManager:ProcessTaskbars:NotEnabled:TaskbarManager:TimerUpdateTick]: 1 monitor detected, waiting.##_##-
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-##_##INFO:L2##_##apphook64.dll##_##HookDLL:64:CallWndRetProc##_##-##_##WindowPosChanged:Ignore:NotMoved:1: Window: 00000000000F1064, D1: 0, D2: 0, D3: 420, D4: 31##_##-
-##_##INFO:L1##_##hookapp64.exe##_##HookDLL:64:App:WndProc##_##-##_##LoadHook: Trying to load hooks: Window: 0000000000190E2C, D1: 13320, PID: 6624, TID: 1204, File: DisplayFusionHookApp64.exe##_##-
-##_##INFO:L1##_##hookapp64.exe##_##HookDLL:64:App:WndProc##_##-##_##LoadHook: Hook [CallWnd]: Window: 0000000000190E2C, Thread: 13320, Hook: 00000000002B1111, PID: 6624, TID: 1204, File: DisplayFusionHookApp64.exe##_##-
-##_##INFO:L1##_##hookapp64.exe##_##HookDLL:64:App:WndProc##_##-##_##LoadHook: Hook [CallWndRet]: Window: 0000000000190E2C, Thread: 13320, Hook: 00000000005911D9, PID: 6624, TID: 1204, File: DisplayFusionHookApp64.exe##_##-
-##_##INFO:L1##_##hookapp64.exe##_##HookDLL:64:App:WndProc##_##-##_##LoadHook: Hook [GetMsg]: Window: 0000000000190E2C, Thread: 13320, Hook: 0000000000880C05, PID: 6624, TID: 1204, File: DisplayFusionHookApp64.exe##_##-

Mar 30, 2023 (modified Mar 30, 2023) • #3

Thanks for confirming, we were able to reproduce this on our end so I've added it to our list to look into. We'll let you know if we have anything further on it going forward.

In the meantime, if you don't need to use Eclipse with splits, you can create a compatibility rule in DisplayFusion to enable hooks, and that should fix it up.

Thanks!

Mar 31, 2023 • #4

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'Window Management'-Setting decreases UI performance in certain cases