Taupin974, voici le détails des tests de ce soir :
(précision que le download est en premier dans mes traces)
20h :
[ 5] 0.0- 5.0 sec 20.5 MBytes 34.4 Mbits/sec
[ 5] 5.0-10.0 sec 19.3 MBytes 32.3 Mbits/sec
[ 5] 0.0-10.1 sec 40.0 MBytes 33.2 Mbits/sec
[ 5] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
[ 4] 0.0- 5.0 sec 3.43 MBytes 5.76 Mbits/sec
[ 4] 5.0-10.0 sec 3.44 MBytes 5.78 Mbits/sec
[ 4] 0.0-10.3 sec 7.09 MBytes 5.77 Mbits/sec
[ 4] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
19h:
[ 5] 0.0- 5.0 sec 22.2 MBytes 37.2 Mbits/sec
[ 5] 5.0-10.0 sec 17.9 MBytes 30.0 Mbits/sec
[ 5] 0.0-10.1 sec 40.2 MBytes 33.3 Mbits/sec
[ 5] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
[ 4] 0.0- 5.0 sec 3.43 MBytes 5.75 Mbits/sec
[ 4] 5.0-10.0 sec 3.44 MBytes 5.78 Mbits/sec
[ 4] 0.0-10.3 sec 7.09 MBytes 5.76 Mbits/sec
[ 4] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
18h :
[ 5] 0.0- 5.0 sec 21.7 MBytes 36.4 Mbits/sec
[ 5] 5.0-10.0 sec 18.3 MBytes 30.8 Mbits/sec
[ 5] 0.0-10.1 sec 40.2 MBytes 33.3 Mbits/sec
[ 5] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
[ 4] 0.0- 5.0 sec 3.43 MBytes 5.75 Mbits/sec
[ 4] 5.0-10.0 sec 3.42 MBytes 5.74 Mbits/sec
[ 4] 0.0-10.3 sec 7.06 MBytes 5.76 Mbits/sec
[ 4] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
17h :
[ 5] 0.0- 5.0 sec 22.1 MBytes 37.1 Mbits/sec
[ 5] 5.0-10.0 sec 17.9 MBytes 30.1 Mbits/sec
[ 5] 0.0-10.1 sec 40.2 MBytes 33.3 Mbits/sec
[ 5] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
[ 4] 0.0- 5.0 sec 3.42 MBytes 5.75 Mbits/sec
[ 4] 5.0-10.0 sec 3.44 MBytes 5.77 Mbits/sec
[ 4] 0.0-10.3 sec 7.07 MBytes 5.76 Mbits/sec
[ 4] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
16h :
[ 5] 0.0- 5.0 sec 22.2 MBytes 37.3 Mbits/sec
[ 5] 5.0-10.0 sec 17.8 MBytes 29.9 Mbits/sec
[ 5] 0.0-10.1 sec 40.2 MBytes 33.3 Mbits/sec
[ 5] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
[ 4] 0.0- 5.0 sec 3.42 MBytes 5.74 Mbits/sec
[ 4] 5.0-10.0 sec 3.44 MBytes 5.77 Mbits/sec
[ 4] 0.0-10.3 sec 7.04 MBytes 5.75 Mbits/sec
[ 4] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
Une prochaine version du test qui arrive bientôt détaillera le débit seconde par seconde et prendra le meilleur débit des 10 dernière secondes du test (le test durera 12 secondes).
Visiblement dans ton cas il y a un dépassement de buffer toujours au même endroit ce qui fait chuter le débit entre la 5ème et la 10ème seconde.
J'ai regardé la trace de 20h00, à partir de la 9.5 seconde le débit s'écroule.