Effectivement, un iperf avec BBR augmente le débit "visuellement"... mais je me retrouve avec plusieurs dizaines de milliers de retries, ça ne revient donc qu'à cacher le problème :
- BBR :
16:52:11|root@titanium ~ # iperf3 -c paris.testdebit.info -p 9210 -6 -C bbr
Connecting to host paris.testdebit.info, port 9210
[ 5] local 2a01:e0a:xxxxxxxx port 52272 connected to 2001:860:de01:1101::2 port 9210
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 73.7 MBytes 618 Mbits/sec 7904 2.26 MBytes
[ 5] 1.00-2.00 sec 77.5 MBytes 650 Mbits/sec 4150 2.15 MBytes
[ 5] 2.00-3.00 sec 80.0 MBytes 671 Mbits/sec 2809 2.15 MBytes
[ 5] 3.00-4.00 sec 77.5 MBytes 650 Mbits/sec 2304 2.73 MBytes
[ 5] 4.00-5.00 sec 78.8 MBytes 661 Mbits/sec 6056 1.28 MBytes
[ 5] 5.00-6.00 sec 75.0 MBytes 629 Mbits/sec 4592 2.61 MBytes
[ 5] 6.00-7.00 sec 78.8 MBytes 661 Mbits/sec 3311 1.02 MBytes
[ 5] 7.00-8.00 sec 80.0 MBytes 671 Mbits/sec 2132 1.37 MBytes
[ 5] 8.00-9.00 sec 78.8 MBytes 661 Mbits/sec 2139 1.29 MBytes
[ 5] 9.00-10.00 sec 78.8 MBytes 661 Mbits/sec 2530 2.18 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 779 MBytes 653 Mbits/sec 37927 sender
[ 5] 0.00-10.04 sec 777 MBytes 649 Mbits/sec receiver
- Cubic :
16:51:58|root@titanium ~ # iperf3 -c paris.testdebit.info -p 9210 -6
Connecting to host paris.testdebit.info, port 9210
[ 5] local 2a01:e0a:xxxxxxxx port 41654 connected to 2001:860:de01:1101::2 port 9210
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 65.9 MBytes 553 Mbits/sec 294 1004 KBytes
[ 5] 1.00-2.00 sec 77.5 MBytes 650 Mbits/sec 0 1.07 MBytes
[ 5] 2.00-3.00 sec 75.0 MBytes 629 Mbits/sec 68 823 KBytes
[ 5] 3.00-4.00 sec 43.8 MBytes 367 Mbits/sec 25 629 KBytes
[ 5] 4.00-5.00 sec 42.5 MBytes 357 Mbits/sec 1 484 KBytes
[ 5] 5.00-6.00 sec 37.5 MBytes 315 Mbits/sec 0 538 KBytes
[ 5] 6.00-7.00 sec 42.5 MBytes 356 Mbits/sec 0 594 KBytes
[ 5] 7.00-8.00 sec 45.0 MBytes 378 Mbits/sec 0 650 KBytes
[ 5] 8.00-9.00 sec 48.8 MBytes 409 Mbits/sec 0 706 KBytes
[ 5] 9.00-10.00 sec 53.8 MBytes 451 Mbits/sec 0 761 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 532 MBytes 446 Mbits/sec 388 sender
[ 5] 0.00-10.04 sec 530 MBytes 443 Mbits/sec receiver
EDIT :
Et résultat de l'outil checkFtthFree depuis un poste Windows :
[checkFtthFree v0.12] Windows 10 Build 22621 (64-bit)
-------------------------- 2023-06-12 16:57:50 +0200 --------------------------
Paramétrage réseau actuel du système:
AutoTuningLevelLocal: Normal
CongestionProvider: CUBIC
EcnCapability: Disabled
NetworkCategory: Public
ScalingHeuristics: Disabled
Timestamps: Allowed
=> Latence TCP max pour une réception à 1 Gbps: 141 ms
Test TCP local (IPv4): téléchargement depuis la Freebox
--> Latence: 0.71 ms [gigue: 0.12 ms]
--> Débit: 111.78 Mo/s (894.22 Mbps) [fluctuation: 1.94%]
Test TCP Internet (IPv4): téléchargement depuis l'AS 12876 (Scaleway) [BBR]
--> Latence: 13.17 ms [gigue: 0.20 ms]
--> Débit: 112.49 Mo/s (899.94 Mbps) [fluctuation: 3.04%]
Test TCP Internet (IPv4): téléchargement depuis l'AS 12876 (Scaleway) [CUBIC]
--> Latence: 12.91 ms [gigue: 0.24 ms]
--> Débit: 12.37 Mo/s (99.00 Mbps) [fluctuation: 13.96%]
[!] La connexion aux serveurs de test semble affectée par une perte de paquets prononcée
(ratio débit CUBIC/BBR: 11.00%)
-------------------------- 2023-06-12 16:58:32 +0200 --------------------------