BufferBloat

Last updated February 1, 2022

Symptoms of bufferbloat-induced congestion

Testing Bufferbloat

Waveform DSLReports

ELI5 Wifi buffers

If you’re connecting over WiFi, there are actually three buffers . Looking at the download path, there is:

1. A buffer between your cable, DSL, LTE, satellite or fiber modem and your router;
2. A buffer between your router and the WiFi access point (which may both be in the same physical box);
3. A buffer between your phone or laptop’s WiFi chipset and the actual computer. Source

Criteria Web Browsing: Download speed > 2 Mbps Upload speed > 100 Kbps Latency < 500 ms Audio Calls: Download speed > 100 Kbps Upload speed > 100 Kbps 95th Percentile Latency < 400 ms 4K Video Streaming: Download speed > 25 Mbps Video Conferencing: Download speed > 10 Mbps Upload speed > 5 Mbps 95th Percentile Latency < 400 ms Low Latency Gaming: Download speed > 10 Mbps Upload speed > 3 Mbps 95th Percentile Latency < 40 ms

Resources

• bufferbloat.net
• Bufferbloat and Beyond: Removing Performance Barriers in Real-World Networks

#networking #QueueManagement #ActiveQueueManagement #Bufferbloat