But the demand for more information about one’s internet connection could have prompted for a revamp, which has been done. The app can now measure your connection’s latency (lag/ping) and upload speed. This will help to give you a more comprehensive view of your internet connection speed and allow you to determine whether your ISP is providing as required of them. Upload speed is how fast your data is being uploaded to the internet while Latency is the time it takes for data to travel from a user’s device to the server and back. On the app, latency will be measured on both unloaded and loaded connections. Unloaded latency measures the round-trip time of a request when there is no other traffic present on a user’s network, while loaded latency measures the round-trip time when data-heavy applications are being used on the network. Read About: How to browse the internet on your computer with very slow internet speeds In a post on the Netflix Media Center, Netflix explains what these terms and numbers mean. Netflix generated more than half a billion speed tests over the past two years, and after consulting regular Fast.com users, they are adding the ability to measure connection latency and upload speed. Ideally, those two values for unloaded and loaded latency should be close to each other. If not, that might explain your poor experience with latency sensitive applications (like gaming, video calls or web surfing) under heavy network usage.