Hi, i have switch to a provider that uses PPPoE over a VLAN (XGS-PON)
I am seeing retransmissions and am unable to remove them.
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 246 MBytes 2.06 Gbits/sec 68 2.02 MBytes
[ 5] 1.00-2.00 sec 273 MBytes 2.29 Gbits/sec 6 2.16 MBytes
[ 5] 2.00-3.00 sec 273 MBytes 2.29 Gbits/sec 0 2.25 MBytes
[ 5] 3.00-4.00 sec 244 MBytes 2.04 Gbits/sec 1 1.70 MBytes
[ 5] 4.00-5.00 sec 239 MBytes 2.00 Gbits/sec 0 1.86 MBytes
[ 5] 5.00-6.00 sec 254 MBytes 2.13 Gbits/sec 0 1.98 MBytes
[ 5] 6.00-7.00 sec 269 MBytes 2.26 Gbits/sec 0 2.08 MBytes
[ 5] 7.00-8.00 sec 275 MBytes 2.31 Gbits/sec 0 2.15 MBytes
[ 5] 8.00-9.00 sec 276 MBytes 2.31 Gbits/sec 0 2.21 MBytes
[ 5] 9.00-10.00 sec 274 MBytes 2.30 Gbits/sec 0 2.25 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 2.56 GBytes 2.20 Gbits/sec 75 sender
[ 5] 0.00-10.05 sec 2.56 GBytes 2.19 Gbits/sec receiver
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 237 MBytes 1.99 Gbits/sec 96 1.92 MBytes
[ 5] 1.00-2.00 sec 261 MBytes 2.19 Gbits/sec 0 2.02 MBytes
[ 5] 2.00-3.00 sec 269 MBytes 2.26 Gbits/sec 0 2.11 MBytes
[ 5] 3.00-4.00 sec 274 MBytes 2.30 Gbits/sec 0 2.20 MBytes
[ 5] 4.00-5.00 sec 274 MBytes 2.30 Gbits/sec 0 2.29 MBytes
[ 5] 5.00-6.00 sec 275 MBytes 2.30 Gbits/sec 0 2.38 MBytes
[ 5] 6.00-7.00 sec 259 MBytes 2.17 Gbits/sec 28 1.78 MBytes
[ 5] 7.00-8.00 sec 246 MBytes 2.06 Gbits/sec 0 1.94 MBytes
[ 5] 8.00-9.00 sec 265 MBytes 2.22 Gbits/sec 0 2.08 MBytes
[ 5] 9.00-10.00 sec 274 MBytes 2.30 Gbits/sec 0 2.18 MBytes
I have tried changing MTU settings as below :
TEST1
eth2 (SFP+ wan) : 1508
eth2.[vlan] - SFP+ wan : default
wan-pppoe - SFP+ wan : 1500
TEST2
eth2 (SFP+ wan) : 1512
eth2.[vlan] - SFP+ wan : 1508
wan-pppoe - SFP+ wan : 1500
TEST3
eth2 (SFP+ wan) : 1504
eth2.[vlan] : 1500
wan-pppoe - SFP+ wan : 1492
Looking for advise on other things to try to remove these retransmissions as much as possible.
Any advise would be amazing.
Also of note is that TEST1 and TEST2 seems to break the hardware offloading and I see high (78-80% CPU usage across 2 cores when running a speed test from lan -> wan)