WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

Re: [Xen-users] Delay opening sockets

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Delay opening sockets
From: Adam Smith <adam@xxxxxxxxxx>
Date: Tue, 08 Aug 2006 17:42:11 +0100
Delivery-date: Tue, 08 Aug 2006 09:43:40 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <20060808155850.GA20580@xxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <44D8AD19.5020607@xxxxxxxxxx> <20060808154800.GA19363@xxxxxxxxxxxx> <44D8B37B.3040201@xxxxxxxxxx> <20060808155850.GA20580@xxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Thunderbird 1.5.0.5 (Windows/20060719)
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
UK Webhosting Ltd.

Tel  (0870) 0115578
Fax  (01323) 741135

http://www.2host.co.uk
http://www.registron.co.uk
sales@xxxxxxxxxxxxxxxxxxx

The above information is confidential to the addressee and may be privileged.  
Unauthorised access and use is prohibited.

Internet communications are not secure and therefore this company does not 
accept legal responsibility for the contents of this message.

If you are not the intended recipient, any disclosure, copying, distribution or 
any action taken or omitted to be taken in reliance on it, is prohibited and 
may be unlawful.

UK Webhosting Ltd is registered in England and Wales, number 04977925.





_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users

<Prev in Thread] Current Thread [Next in Thread>