The CoDel queue management algorithm
Posted Jul 25, 2012 12:13 UTC (Wed) by farnz
In reply to: The CoDel queue management algorithm
Parent article: The CoDel queue management algorithm
All DSL technologies in current use run at a 4 kilobaud signalling rate; higher speeds are provided by running more bits per symbol, so your 10MBit/s ADSL2 is 2,500 bits per symbol, while 40M VDSL2 would be 10,000 bits per symbol.
This puts a lower bound on DSL latency of 0.25 milliseconds; practically, VDSL2 seems able to reliably reach the 5ms RTT range for the DSL link itself, while my home ADSL2+ has around 25ms RTT.
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