LVS
lvs-users
[Top] [All Lists]
Google
 
Web LinuxVirtualServer.org
<prev [Date] next> <prev [Thread] next>

Re: Directory -> Real Server Latency

from [Joseph Mack NA3T] [Permanent Link]
To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Directory -> Real Server Latency
From: Joseph Mack NA3T <jmack@xxxxxxxx>
Date: Thu, 14 Jul 2005 10:49:26 -0700 (PDT) 
On Thu, 14 Jul 2005, Nigel Hamilton wrote:


Hi,
I'm using IP tunnelling to load balance HTTP requests from the director to 44 real servers. The real servers are all in different subnets of an ISP.
I'm seeing 500-800 ms more latency when accessing the web service via the director than going directly to the real servers. Any ideas on why this would be happening? 

you're timing individual packets?
these problems are usually routing. There is also the MTU problem with LVS-Tun (in the HOWTO). 

Joe

--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml Homepage http://www.austintek.com/ It's GNU/Linux!
[More with this subject...]
<Prev in Thread] Current Thread [Next in Thread>
Previous by Date:  Re: Inconsistent between ipvsadm stats & realserver's, Joseph Mack NA3T
Next by Date:  What are people doing for data sharing between real servers, Randy Paries
Previous by Thread:  Directory -> Real Server Latency, Nigel Hamilton
Next by Thread:  Re: Distributed Filesystem, Clint Byrum
Indexes:  [Date] [Thread] [Top] [All Lists]