Response Time Limit
Response time limits are the established psychological thresholds that dictate how users perceive system delays. Research shows there are critical boundaries for user attention and patience: interactions under 100ms feel instantaneous, while delays over 1 second are enough to interrupt a user's flow of thought, and delays over 10 seconds will likely lead to task abandonment. These well-documented limits form the scientific basis for the "Good," "Needs Improvement," and "Poor" thresholds used in modern web performance metrics like LCP and INP.
Related web performance terms
- ROI (Return on Investment)
ROI is a business metric used to evaluate the profitability of an investment by comparing the net profit to the cost of the investment. It is typically expressed as a percentage.
- RTT (Round Trip Time)
RTT stands for Round Trip Time and is a fundamental networking metric. It measures the total time it takes for a data packet to travel from a source (like a user's browser) to a destination (a serv…
- RTT-0 (Zero Round-Trip Time)
0-RTT (Zero Round-Trip Time Resumption) is a high-performance feature of modern network protocols like TLS 1.3 and HTTP/3.
- Real User Monitoring (RUM)
See Field Data.