Je pige pas tout :
et
axel -a -n 16 http://ipv6.bouygues.testdebit.info/1G.iso
Initializing download: http://ipv6.bouygues.testdebit.info/1G.iso
File size: 1000000000 bytes
Opening output file 1G.iso.3
Starting download
...
Downloaded 953,7 Megabyte in 9 seconds. (99311,01 KB/s)
Mais en revanche :
iperf3 -c bouygues.testdebit.info -p 5202 -R -t 20
Connecting to host bouygues.testdebit.info, port 5202
Reverse mode, remote host bouygues.testdebit.info is sending
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 26.9 MBytes 226 Mbits/sec
[ 4] 1.00-2.00 sec 33.0 MBytes 277 Mbits/sec
[ 4] 2.00-3.00 sec 38.7 MBytes 324 Mbits/sec
[ 4] 3.00-4.00 sec 32.0 MBytes 269 Mbits/sec
[ 4] 4.00-5.00 sec 36.6 MBytes 307 Mbits/sec
[ 4] 5.00-6.00 sec 42.1 MBytes 353 Mbits/sec
[ 4] 6.00-7.00 sec 47.4 MBytes 398 Mbits/sec
[ 4] 7.00-8.00 sec 47.3 MBytes 397 Mbits/sec
[ 4] 8.00-9.00 sec 42.5 MBytes 357 Mbits/sec
[ 4] 9.00-10.00 sec 47.1 MBytes 395 Mbits/sec
[ 4] 10.00-11.00 sec 52.6 MBytes 441 Mbits/sec
[ 4] 11.00-12.00 sec 58.0 MBytes 486 Mbits/sec
[ 4] 12.00-13.00 sec 63.7 MBytes 534 Mbits/sec
[ 4] 13.00-14.00 sec 69.2 MBytes 581 Mbits/sec
[ 4] 14.00-15.00 sec 53.8 MBytes 451 Mbits/sec
[ 4] 15.00-16.00 sec 60.3 MBytes 506 Mbits/sec
[ 4] 16.00-17.00 sec 65.3 MBytes 548 Mbits/sec
[ 4] 17.00-18.00 sec 69.3 MBytes 582 Mbits/sec
[ 4] 18.00-19.00 sec 74.8 MBytes 628 Mbits/sec
[ 4] 19.00-20.00 sec 80.5 MBytes 675 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-20.00 sec 1.02 GBytes 438 Mbits/sec 366 sender
[ 4] 0.00-20.00 sec 1.02 GBytes 437 Mbits/sec receiver
Les tests nperf sont systématiquement beaucoup moins bons. Comment cela peut-il s'expliquer?
Edit : hypothèse de débutant, un problème de SSL/cryptage qui ralentirait le transfert car :
axel -a -n 16 --insecure
https://ipv6.bouygues.testdebit.info/1G.isoInitializing download:
https://ipv6.bouygues.testdebit.info/1G.isoFile size: 1000000000 bytes
Opening output file 1G.iso.4
State file found: 485230016 bytes downloaded, 514769984 to go.
Starting download
...
[100%] [...................................................................................................] [ 29,3MB/s] [00:00]
Downloaded 490,9 Megabyte in 16 seconds. (30031,40 KB/s)