Video and audio
Calls need low and stable latency. A connection can have enough throughput for video but still feel delayed when queues fill.
internet reliability test
Internet reliability test
An internet reliability test asks whether the connection keeps responding while it is busy. Bufferbloat.org tests that by comparing normal ping with ping during download and upload pressure.
real-world connection check
See whether the line stays usable under load.
Run one browser test to measure quiet ping, loaded ping, throughput, and a bufferbloat grade that explains how the connection is likely to feel in everyday use.
Web responsiveness
Pages can hesitate when interactive requests are stuck behind large downloads, uploads, or cloud sync traffic.
Busy household networks
Reliability matters most when several devices are active at once, not when a speed test has the line to itself.
Throughput is not the whole story
Megabits per second measure throughput. They do not tell you whether the connection stays responsive when upload and download traffic are active.
Bufferbloat.org keeps throughput visible, but the reliability signal is how much latency changes while the line is under stress.
Why this is a bufferbloat test
Bufferbloat is the delay that appears when queues grow too large. The user experience is simple: the internet may still be fast, but it stops feeling responsive.
The test is open source and browser-based so the core method can be inspected, discussed, and improved.
Continue reading
These related pages explain the measurement terms and the open-source methodology behind the test.