Re: [Xen-users] Delay opening sockets

[Adam Smith <adam@xxxxxxxxxx>]

Thanks Steve but that didn't do it either. 

It's not the remote server doing an rDNS lookup as it doesn't occur with 
adjacent machines on the same /24 (with the same reverse delegation). 

Regards,

Adam.

Steve Kemp wrote:
> On Tue, Aug 08, 2006 at 04:53:31PM +0100, Adam Smith wrote:
>
>   
> > Thanks but that's the first thing we tried.  It's not a DNS lookup 
> > causing the delay (we're connecting by IP address) and we've ruled out 
> > anything on the remote server.  It occurs on any port, with any service 
> > as far as we can tell.
> >     
>   (For DNS I meant that the service you're connecting to might be
>  timing out doing lookups of the IPs it sees connecting; so even
>  if you're connecting to the server by IP addresses that could
>  still be the problem.  Anyway you say you've ruled it out, thats
>  good enough for me.)
>
>   I guess the next obvious thing to try is to disable the TCP
>  checksumming and see if that helps.
>
>   Run the following as root on the system which is having the
>   problem(s):
>
>   ethtool -K eth0 tx off
>
>   See if that helps?
>
> Steve
>   
--

Adam Smith
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