Multihoming problem

["이희승 (Trustin Lee)"]

To see if this is a Netty issue or a generic Java networking issue, 
could you write a very simple plain socket client in Java and see if 
the problem goes away?

Thanks,
Trustin

On Thu 09 Jun 2011 08:40:18 AM KST, netty_newbie wrote:
> Hi,
> 
> I have two machines. Each has 3 ethernet cards.  Each ethernet card has it's
> own IP address.
> 
> 
> I am doing a bench mark so see if I can saturate the network.
> 
> The server is listening on * (all ips)
> 
> The client establishes 3 connections (each connection binds one of the local
> ips to one remote ones). 
> 
> The nics are 1gbit each.  I am not going past around 800-900 mbit/sec. 
> looking at network utilization, it seems like all the traffic is going
> through one of the network interfaces, eth0, and not the others.  So one nic
> is getting saturated which the others are not being used.
> 
> 
> The client code is pretty straight forward.
> 
> for (int i = 0; i < connections; i ++) {
>         	InetSocketAddress localAddress = new InetSocketAddress(
>         			localAddresses.get(i % localAddresses.size()), //Round robin over
> ip addresses
>         			clientPort++
>         		);
>         
>         	InetSocketAddress remoteAddress = new InetSocketAddress(
>         			remoteAddresses.get(i % remoteAddresses.size()),
>         			Constant.PORT);
>         	System.out.format("Connecting local:%s remote:%s\n",
> localAddress.toString(), remoteAddress.toString());
>             fa[i] = bootstrap.connect(remoteAddress, localAddress);
>         }
> 
> 
> I am pretty sure the network is setup properly.  I tested it with nc and I
> see the correct interface being utilized based on the ip address i used.
> 
> Thanks!
> 
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-- 
Trustin Lee, http://gleamynode.net/