Slow Rendering Instrumentation

Generates: Events

Detects UI jank by polling frame metrics every second. Reports slow renders (>16ms) and frozen renders (>700ms).

Configuration

Enabled by default. To disable:

PulseSDK.INSTANCE.initialize(
    application = this,

    apiKey = "your-api-key",
    dataCollectionState = PulseDataCollectionConsent.ALLOWED,
) {
    slowRenderingReporter { enabled(false) }
}

What Gets Tracked

Condition	Threshold	pulse.type
Slow render	> 16ms	app.jank.slow
Frozen render	> 700ms	app.jank.frozen

Attributes

Attribute	Description	Always Present
pulse.type	app.jank.slow or app.jank.frozen	✅
app.jank.threshold	Threshold in seconds (0.016 or 0.7)	✅
app.jank.frame_count	Number of affected frames in the period	✅
app.jank.period	Polling period in seconds	✅
screen.name	Current screen	⚠️ If available