Foi corrigido com:
service iptables stop
echo > /etc/sysconfig/iptables
service iptables start
Parece que havia algumas regras de iptable mangle.
Eu tenho um servidor dedicado conectado a uma porta de 1000 Mbit. No entanto, o convidado do Debian está obtendo apenas metade a 1/4 das velocidades:
No próprio nó (nó Linux 2.6.32-279.9.1.el6.x86_64 # 1 SMP ter 25 de setembro 21:43:11 UTC 2012 x86_64 x86_64 x86_64 GNU / Linux):
wget http://www.bbned.nl/scripts/speedtest/download/file1000mb.bin -O /dev/null
--2012-11-11 23:10:11-- http://www.bbned.nl/scripts/speedtest/download/file1000mb.bin
Resolving www.bbned.nl... 62.177.144.181
Connecting to www.bbned.nl|62.177.144.181|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1048576000 (1000M) [application/octet-stream]
Saving to: â/dev/nullâ
100%[====================================>] 1,048,576,000 100M/s in 10s
2012-11-11 23:10:21 (100 MB/s) - â/dev/nullâ
No convidado (Debian 6.0.5, x64: Linux debian 2.6.32-5-amd64 # 1 SMP Dom 23 de setembro 10:07:46 UTC 2012 x86_64 GNU / Linux):
wget http://www.bbned.nl/scripts/speedtest/download/file1000mb.bin -O /dev/null
--2012-11-11 23:10:41-- http://www.bbned.nl/scripts/speedtest/download/file1000mb.bin
Resolving www.bbned.nl... 62.177.144.181
Connecting to www.bbned.nl|62.177.144.181|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1048576000 (1000M) [application/octet-stream]
Saving to: â/dev/nullâ
100%[=================================================================================================================================================================================================>] 1,048,576,000 16.5M/s in 42s
2012-11-11 23:11:23 (23.8 MB/s) - â/dev/nullâ
Eu uso a NIC virtio . Eu tentei mais algumas placas de rede: e1000 e o Realtek 8139, mas elas renderam resultados ainda piores.
Alguém tem uma ideia de como melhorar essas velocidades?