Am Sonntag 31 Januar 2010 22:59:05 schrieben Sie: > Dominik Schulz wrote: > > Hi, > > I'm currently evaluating LXC as an alternative to other contextualisation > > technologies, and I have the problem that network connections between the > > container and the host on which it is running are very slow (about 35 > > kbit/s) wheras connections to other system can exploit the full > > connection speed. > > Is this a known issue or is someting wrong with my configuration? > > The relevant snippet of my lxc config: > > lxc.network.type = veth > > lxc.network.flags = up > > lxc.network.link = br0 > > lxc.network.name = eth0 > > lxc.network.mtu = 1500 > > My Bridge (br0) has an MTU of 1480, could that be the problem? > Having a different mtu size will contribute to decrease the > performances. But the difference is too big to be related only to the > mtu IMO. > Are you sure there is not another container somewhere with the same > network configuration messing the communication ? Perhaps on another host ? I'm pretty sure that the network address is unique in my subnet. But I see a lot of TCP Retransmisions (about 50% of the packages!) and duplicated TCP ACKs in the packet dump on the containers interface. This is very strange.
-- Mit freundlichen Grüßen / Best Regards Dominik
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