[Bloat] T-Mobile LTE buffer bloat

[Srikanth Sundaresan]

>> 
>> My personal record for a mobile network is 180 seconds RTT. They *really*
>> *really* want to deliver the packets, and if the radio environment go bad
>> they'll still buffer 400 packets (or so).
> 
> Darn. You win. The worst I've seen is 84 seconds.
> 

Here's a ping trace from t-mobile when there was a big music festival a block from my apartment. 122 seconds (but zero loss), before I get disconnected.

PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: seq=0 ttl=46 time=46656.509 ms
64 bytes from 8.8.8.8: seq=1 ttl=46 time=47046.226 ms
64 bytes from 8.8.8.8: seq=2 ttl=46 time=47210.621 ms
64 bytes from 8.8.8.8: seq=3 ttl=46 time=46300.097 ms
64 bytes from 8.8.8.8: seq=4 ttl=46 time=46490.259 ms
64 bytes from 8.8.8.8: seq=5 ttl=46 time=45543.573 ms
64 bytes from 8.8.8.8: seq=6 ttl=46 time=44610.118 ms
64 bytes from 8.8.8.8: seq=7 ttl=46 time=43659.564 ms
64 bytes from 8.8.8.8: seq=8 ttl=46 time=42677.023 ms
64 bytes from 8.8.8.8: seq=9 ttl=46 time=41747.164 ms
64 bytes from 8.8.8.8: seq=10 ttl=46 time=40834.181 ms
64 bytes from 8.8.8.8: seq=11 ttl=46 time=39834.719 ms
64 bytes from 8.8.8.8: seq=12 ttl=46 time=38898.367 ms
64 bytes from 8.8.8.8: seq=13 ttl=46 time=37966.098 ms
64 bytes from 8.8.8.8: seq=14 ttl=46 time=38126.381 ms
64 bytes from 8.8.8.8: seq=15 ttl=46 time=37173.727 ms
64 bytes from 8.8.8.8: seq=16 ttl=46 time=37393.522 ms
64 bytes from 8.8.8.8: seq=17 ttl=46 time=36405.295 ms
64 bytes from 8.8.8.8: seq=18 ttl=46 time=35495.237 ms
64 bytes from 8.8.8.8: seq=19 ttl=46 time=34522.977 ms
64 bytes from 8.8.8.8: seq=20 ttl=46 time=35750.939 ms
64 bytes from 8.8.8.8: seq=21 ttl=46 time=40660.576 ms
64 bytes from 8.8.8.8: seq=22 ttl=46 time=39730.537 ms
64 bytes from 8.8.8.8: seq=23 ttl=46 time=38730.503 ms
64 bytes from 8.8.8.8: seq=24 ttl=46 time=37804.354 ms
64 bytes from 8.8.8.8: seq=25 ttl=46 time=36819.838 ms
64 bytes from 8.8.8.8: seq=26 ttl=46 time=37153.646 ms
64 bytes from 8.8.8.8: seq=27 ttl=46 time=37413.711 ms
64 bytes from 8.8.8.8: seq=28 ttl=46 time=37581.268 ms
64 bytes from 8.8.8.8: seq=29 ttl=46 time=37733.075 ms
64 bytes from 8.8.8.8: seq=30 ttl=46 time=40190.826 ms
64 bytes from 8.8.8.8: seq=31 ttl=46 time=101158.557 ms
64 bytes from 8.8.8.8: seq=32 ttl=46 time=101264.386 ms
64 bytes from 8.8.8.8: seq=33 ttl=46 time=103640.134 ms
64 bytes from 8.8.8.8: seq=34 ttl=46 time=103819.819 ms
64 bytes from 8.8.8.8: seq=35 ttl=46 time=103958.008 ms
64 bytes from 8.8.8.8: seq=36 ttl=46 time=104057.496 ms
64 bytes from 8.8.8.8: seq=37 ttl=46 time=103081.290 ms
64 bytes from 8.8.8.8: seq=38 ttl=46 time=103191.206 ms
64 bytes from 8.8.8.8: seq=39 ttl=46 time=107700.964 ms
64 bytes from 8.8.8.8: seq=40 ttl=46 time=107818.726 ms
64 bytes from 8.8.8.8: seq=41 ttl=46 time=106833.938 ms
64 bytes from 8.8.8.8: seq=42 ttl=46 time=107042.706 ms
64 bytes from 8.8.8.8: seq=43 ttl=46 time=110530.331 ms
64 bytes from 8.8.8.8: seq=44 ttl=46 time=115255.932 ms
64 bytes from 8.8.8.8: seq=45 ttl=46 time=121191.910 ms
64 bytes from 8.8.8.8: seq=46 ttl=46 time=120217.588 ms
64 bytes from 8.8.8.8: seq=47 ttl=46 time=120653.489 ms
64 bytes from 8.8.8.8: seq=48 ttl=46 time=122025.125 ms
ping: sendto: Network is unreachable