Will Smart Queue QoS (fq_codel) work with a satellite connection with its slow latency and slow throughput? What are the settings to make it work? Can both download and upload be enabled? Has anyone even tried this?
This is a satellite connection in Asia on a remote island. Download is 2 megabits. Upload is 512 megabits.
So far I have discovered the following from the Ubiquiti community:
- at really low rates (below 3Mbit) it pays to increase the codel target, e.g. "fq_codel quantum 300 target 15ms interval 150ms"
And from Bufferbloat.net: ECN is enabled by default. ECN is useful in the data center but far less so today on the open internet. Current best practice is to turn off ECN on uplinks running at less than 4Mbit (if you want good VOIP performance; a single packet at 1Mbps takes 13ms, and packet drops get you this latency back).