Bonjour Quentinl,
D'abord une remarque de lisibilité, il est préférable de copier ta commande et le résultat dans ton post, en les entourant de balises code, plutôt que de les ajouter en pièce jointe, qu'il faut télécharger et ouvrir. C'est nettement plus simple et plus lisible dans le corps du texte. Comme cela :
iperf3.exe -u -c iperf.par2.as49434.net -p 9202 -l 32k -b 10g -V --logfile Normal.txt
iperf 3.1.3
CYGWIN_NT-10.0 Quentin-PC 3.3.3(0.341/5/3) 2021-12-03 16:35 x86_64
Time: Fri, 14 Jan 2022 15:48:31 GMT
Connecting to host iperf.par2.as49434.net, port 9202
Cookie: Quentin-PC.1642175311.766082.75cd988
[ 5] local 2a01:e0a:5f5:4ba0:8981:fc11:811a:eeb8 port 57552 connected to 2a0f:9240:1018::2 port 9202
Starting Test: protocol: UDP, 1 streams, 32768 byte blocks, omitting 0 seconds, 10 second test
[ ID] Interval Transfer Bandwidth Total Datagrams
[ 5] 0.00-1.00 sec 638 MBytes 5.35 Gbits/sec 20413
[ 5] 1.00-2.00 sec 719 MBytes 6.03 Gbits/sec 23008
[ 5] 2.00-3.00 sec 716 MBytes 6.01 Gbits/sec 22912
[ 5] 3.00-4.00 sec 714 MBytes 5.99 Gbits/sec 22860
[ 5] 4.00-5.00 sec 715 MBytes 6.00 Gbits/sec 22870
[ 5] 5.00-6.00 sec 715 MBytes 5.99 Gbits/sec 22868
[ 5] 6.00-7.00 sec 718 MBytes 6.02 Gbits/sec 22979
[ 5] 7.00-8.00 sec 716 MBytes 6.00 Gbits/sec 22899
[ 5] 8.00-9.00 sec 718 MBytes 6.03 Gbits/sec 22991
[ 5] 9.00-10.00 sec 710 MBytes 5.96 Gbits/sec 22732
- - - - - - - - - - - - - - - - - - - - - - - - -
Test Complete. Summary Results:
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 5] 0.00-10.00 sec 6.91 GBytes 5.94 Gbits/sec 0.133 ms 0/11 (0%)
[ 5] Sent 11 datagrams
CPU Utilization: local/sender 18.7% (3.4%u/15.3%s), remote/receiver 0.0% (0.0%u/0.0%s)
iperf Done.
Sinon, tu obtiens à priori 6 Gb/s en download, donc c'est excellent. Tu dois avoir un très bon PC.
Pour le deuxième test, reverse :
iperf3.exe -u -c iperf.par2.as49434.net -p 9202 -l 32k -b 10g -R -V --logfile Normal.txt
iperf 3.1.3
CYGWIN_NT-10.0 Quentin-PC 3.3.3(0.341/5/3) 2021-12-03 16:35 x86_64
Time: Fri, 14 Jan 2022 15:49:14 GMT
Connecting to host iperf.par2.as49434.net, port 9202
Reverse mode, remote host iperf.par2.as49434.net is sending
Cookie: Quentin-PC.1642175354.256425.351673c
[ 5] local 2a01:e0a:5f5:4ba0:8981:fc11:811a:eeb8 port 61816 connected to 2a0f:9240:1018::2 port 9202
Starting Test: protocol: UDP, 1 streams, 32768 byte blocks, omitting 0 seconds, 10 second test
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 5] 0.00-1.01 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
[ 5] 1.01-2.01 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
[ 5] 2.01-3.01 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
[ 5] 3.01-4.02 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
[ 5] 4.02-5.01 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
[ 5] 5.01-6.01 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
[ 5] 6.01-7.01 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
[ 5] 7.01-8.01 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
[ 5] 8.01-9.01 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
[ 5] 9.01-10.01 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%)
- - - - - - - - - - - - - - - - - - - - - - - - -
Test Complete. Summary Results:
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 5] 0.00-10.01 sec 10.8 GBytes 9.29 Gbits/sec 0.000 ms 0/0 (0%)
[ 5] Sent 0 datagrams
CPU Utilization: local/receiver 0.0% (0.0%u/0.0%s), remote/sender 100.0% (3.7%u/96.3%s)
iperf Done.
Tu n'as que des zéros à chaque ligne , donc il y a un problème. Et bien sûr, la somme à 9.29 Gb/s est fausse (l'upload est limité à 700 Mb/s chez Free). Je n'ai pas vu quelle était l'erreur dans la commande, mais à priori le débit, ce serait plutôt celui de la connexion entre ton PC et la box...