Networking - Buffer Bloat

See http://www.dslreports.com/speedtest

Ideally you want to see A to A+'s for bufferbloat.

Test result showing a letter grade worse than a B, probably indicate you have bufferbloat.

That means the device at your bottleneck link (most likely your router) is letting bulk traffic (uploads/downloads) interfere with (and slow down) your time-sensitive traffic (gaming, Skype, Facetime, etc.)

If not then tune.

The DSL Reports Speed Test makes accurate measurements of the download and upload speeds along with the latency during the test.

1. Start a ping to google.com. You’ll see a series of lines, one per ping, typically with times in the 20-100 msec range.

2. Run a speed test simultaneously. To do this, start one of the speed test services below:

• http://fast.com - (fast.com now tests for latency under load but we’d like more folk to check their results against our quick test)
• http://speedtest.net
• http://testmy.net
• http://speedof.me

3. Watch the ping times while the speed test is running. If the times jump up when uploading or downloading, then your router is probably bloated.

• Change the Q size.

https://www.youtube.com/watch?v=o8nL81DzTlU&t=380

http://www.dslreports.com/speedtest

https://community.flexradio.com/flexradio/topics/pfsense-router-tuning-v2-4-4

https://www.bufferbloat.net/projects/bloat/wiki/Tests_for_Bufferbloat/

https://forum.netgate.com/topic/112527/playing-with-fq_codel-in-2-4/815

https://forum.netgate.com/topic/112527/playing-with-fq_codel-in-2-4/856

https://forum.netgate.com/topic/112527/playing-with-fq_codel-in-2-4