Applicable Product:
Peoplefluent Learning
Applicable Version:
All Versions
Overview
The Waterfall view in the Network tab visualizes request timing and sequence. This helps identify where time is spent during page load and which components are causing performance bottlenecks in the LMS.
Understanding the Waterfall Phases
Each request includes several timing phases:
Queueing / Stalled
DNS Lookup
Initial Connection
SSL Negotiation
Waiting (TTFB)
Content Download
How to Analyze LMS Slowness
Open Developer Tools → Network tab
Reload the LMS page
Sort requests by Time
Identify the slowest requests
Expand a request to view timing breakdown
Common LMS Scenarios
Slow initial page load
High TTFB on HTML document
Indicates backend or database slowness
Slow dashboards
Long-running XHR calls
Often related to reports, widgets, or APIs
Course launch delays
Multiple sequential requests
Player or content server latency
Summary
Waterfall analysis pinpoints exact delay sources
TTFB is the most critical metric for backend issues
Helps separate browser issues from server-side problems