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[cinnamon/windowManager] PERF: Batch workspace-switch animations #13421

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[cinnamon/windowManager] PERF: Batch workspace-switch animations #13421

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f16c7c0
[cinnamon/windowManager] PERF: Batch workspace-switch animations
carsteneu Jan 16, 2026
0959285
Merge branch 'linuxmint:master' into perf/animation-batching
carsteneu Jan 20, 2026
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47 changes: 37 additions & 10 deletions js/ui/windowManager.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1185,6 +1185,12 @@ var WindowManager = class WindowManager {
}
}

// PERFORMANCE FIX: Batched animation queue to limit concurrent Clutter timelines
// Without batching, 30+ windows create 30+ parallel animations causing compositor overload
let animationQueue = [];
let animationCount = 0;
const MAX_CONCURRENT_ANIMATIONS = 10;

let finish_switch_workspace = (actor) =>
{
if (to_windows.delete(actor)) {
Expand All @@ -1195,6 +1201,10 @@ var WindowManager = class WindowManager {
cleanup_window_effect(actor, true);
};

// Animation completed, decrement counter and process queue
animationCount--;
processAnimationQueue();

if (to_windows.size === 0 && from_windows.size === 0) {
if (kill_id > 0) {
this._cinnamonwm.disconnect(kill_id);
Expand All @@ -1205,6 +1215,22 @@ var WindowManager = class WindowManager {
}
};

let processAnimationQueue = () => {
// Start animations from queue up to the concurrent limit
while (animationQueue.length > 0 && animationCount < MAX_CONCURRENT_ANIMATIONS) {
let animData = animationQueue.shift();
animationCount++;

animData.window.ease({
x: animData.x,
y: animData.y,
duration: this.WORKSPACE_ANIMATION_TIME * this.window_effect_multiplier,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => finish_switch_workspace(animData.window)
});
}
};

for (let i = 0; i < windows.length; i++) {
let window = windows[i];
let {meta_window} = window;
Expand Down Expand Up @@ -1240,12 +1266,11 @@ var WindowManager = class WindowManager {
window.origY = window.y;
}
from_windows.add(window);
window.ease({
// Queue animation instead of starting immediately
animationQueue.push({
window: window,
x: window.origX + xDest,
y: window.origY + yDest,
duration: this.WORKSPACE_ANIMATION_TIME * this.window_effect_multiplier,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => finish_switch_workspace(window)
y: window.origY + yDest
});
} else if (window.get_workspace() === to) {
if (window.origX == undefined) {
Expand All @@ -1255,16 +1280,18 @@ var WindowManager = class WindowManager {
}
to_windows.add(window);
window.show_all();
window.ease({
// Queue animation instead of starting immediately
animationQueue.push({
window: window,
x: window.origX,
y: window.origY,
duration: this.WORKSPACE_ANIMATION_TIME * this.window_effect_multiplier,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => finish_switch_workspace(window)
y: window.origY
});
}
}

// Start initial batch of animations
processAnimationQueue();

if (to_windows.size === 0 && from_windows.size === 0) {
this._cinnamonwm.completed_switch_workspace();
return;
Expand Down