Slow ethernet in linux

[baryluk]

netperf tests with standard pfifo_fast

Code:

$ netperf -H wielkiczarny.local -l 60 -t TCP_STREAM MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to wielkiczarny.local () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 60.00 695.63

Code:

$ netperf -H wielkiczarny.local -l 60 -t TCP_STREAM MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to wielkiczarny.local () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 60.00 702.86

Code:

$ netperf -H wielkiczarny.local -l 60 -t TCP_MAERTS MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to wielkiczarny.local () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 60.00 733.93

Code:

$ netperf -H wielkiczarny.local -l 60 -t UDP_STREAM MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to wielkiczarny.local () port 0 AF_INET : demo Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 212992 65507 60.00 101426 0 885.87 212992 60.00 4087 35.70

Code:

$ netperf -H wielkiczarny.local -l 60 -t UDP_RR MIGRATED UDP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to wielkiczarny.local () port 0 AF_INET : demo : first burst 0 Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 212992 212992 1 1 60.00 8486.10 212992 212992

Code:

$ ip l show dev eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000 link/ether 7a:6e:63:xx:xx:xx brd ff:ff:ff:ff:ff:ff

Still It is unclear to me why wget from Internet is pretty slow at ~4-6MB/s, and maks 10MB/s at the start of download.