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On Saturday 30 October 2010 07:10:17 Simon Horman wrote:
> On Sat, Oct 30, 2010 at 05:54:57AM +0200, Michael Schwartzkopff wrote:
> > 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.
>
> Would it be possible for you to try this with a newer kernel
> and if pain persists describe your setup in a little more detail?
We have 2.6.34.
Simple setup. Everything in the same LAN. direct routing. All hosts with
bonding interfaces connected to two switches.
Greetings,
--
Dr. Michael Schwartzkopff
Guardinistr. 63
81375 München
Tel: (0163) 172 50 98
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