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On Saturday 30 October 2010 05:03:33 Simon Horman wrote:
> On Thu, Oct 28, 2010 at 03:59:17PM +0200, Michael Schwartzkopff wrote:
> > On Thursday 28 October 2010 13:42:47 Simon Horman wrote:
> > > On Thu, Oct 28, 2010 at 08:24:36AM +0200, Michael Schwartzkopff wrote:
> > > > Hi,
> > > >
> > > > is it possible to use direct routing with clients, real server and
> > > > director in the same LAN?
> > >
> > > Yes. Actually, that is how I do most of my testing.
> >
> > Do you have any idea why the director might limit the performance of our
> > system? Without LB I get 100 connections/s to the real IP address of a
> > real server. When I address the virtual IP of the director I get a
> > performance drop to 1 connection/s.
> >
> > tcpdump shows that sometimes I have no traffic at all on the line to 0.2
> > sec.
> >
> > Any ideas? Thanks.
>
> If you are running 2.6.36 then this may relate to a performance
> regression related to the introduction of double NAT.
>
> But regardless, that is a pretty startling result that
> I don't have a decent explanation for.
No. have some older version on the kernel and do not use NAT at all.
The only explanation we found at the moment is that something with bonding did
not work properly.
--
Dr. Michael Schwartzkopff
Guardinistr. 63
81375 München
Tel: (0163) 172 50 98
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