[Users] Network overhead inside VE

[Alexis Bienvenüe]

Hi.

I installed a OpenVZ HN with debian kernel, set up a VE with debootstrap 
with a private IP.

When downloading the same file with wget from internet at the same time, 
I observe 3.1M/s from the HN, but only 13.7K/s from the VE !

I don't see any positive failcnt in /proc/user_beancounters

Could anyone help me with my configuration ?

Thanks,
Alexis Bienvenüe.

### INSIDE VE :

 > /sbin/ifconfig
lo        Link encap:Local Loopback
           inet addr:127.0.0.1  Mask:255.0.0.0
           inet6 addr: ::1/128 Scope:Host
           UP LOOPBACK RUNNING  MTU:16436  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

venet0    Link encap:UNSPEC  HWaddr 
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
           inet addr:127.0.0.1  P-t-P:127.0.0.1  Bcast:0.0.0.0 
Mask:255.255.255.255
           UP BROADCAST POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1
           RX packets:15741 errors:0 dropped:0 overruns:0 frame:0
           TX packets:8798 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:23589983 (22.4 MiB)  TX bytes:489727 (478.2 KiB)

venet0:0  Link encap:UNSPEC  HWaddr 
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
           inet addr:10.10.7.10  P-t-P:10.10.7.10  Bcast:0.0.0.0 
Mask:255.255.255.255
           UP BROADCAST POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1

### HN :

 > /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr 1c:c1:de:e7:2f:48
           inet adr:195.220.110.190  Bcast:195.220.110.191 
Masque:255.255.255.192
           adr inet6: fe80::1ec1:deff:fee7:2f48/64 Scope:Lien
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:38204 errors:0 dropped:0 overruns:0 frame:0
           TX packets:22144 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 lg file transmission:1000
           RX bytes:46315878 (44.1 MiB)  TX bytes:2272196 (2.1 MiB)
           Mémoire:fbe60000-fbe80000

lo        Link encap:Boucle locale
           inet adr:127.0.0.1  Masque:255.0.0.0
           adr inet6: ::1/128 Scope:Hôte
           UP LOOPBACK RUNNING  MTU:16436  Metric:1
           RX packets:8 errors:0 dropped:0 overruns:0 frame:0
           TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 lg file transmission:0
           RX bytes:560 (560.0 B)  TX bytes:560 (560.0 B)

venet0    Link encap:UNSPEC  HWaddr 
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
           UP BROADCAST POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1
           RX packets:8798 errors:0 dropped:0 overruns:0 frame:0
           TX packets:15741 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 lg file transmission:0
           RX bytes:489727 (478.2 KiB)  TX bytes:23589983 (22.4 MiB)


 > tc qdisc show
qdisc mq 0: dev eth0 root

 > iptables -nL
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

 > iptables -t nat -nL
Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination
SNAT       all  --  0.0.0.0/0            0.0.0.0/0 
to:195.220.110.190

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination