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Re: [lvs-users] problems with ipvsadm - 3 seconds delay

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] problems with ipvsadm - 3 seconds delay
From: Rai <luis.reina@xxxxxxxxxxxxxx>
Date: Thu, 28 Feb 2008 19:27:35 +0100
I've tried using lynx or wget

a loop with
30 requests (not concurrent) and sometimes there is a 3 seconds delay

or using web browser with a lot of page refresh with F5, there is a 3 or 
9 seconds delay, too.


This problem appeared when we upgraded all servers from Dual Core 
(intel) to Quad (intel processors) with the exact configuration of 
lighttpd and the exact configuration of Debian Etch and kernel values.

We have modified lighttpd configuration with all of the options, but 
there is a 3 seconds delay with a lot of different lighttpd config.

Thanks for your help



Joseph Mack NA3T escribió:
> On Thu, 28 Feb 2008, Rai wrote:
> 
>> Direct request to a server:
>> _________________________________________________________
>> ab -n10000 -c100 192.168.20.147/img/logo.gif
> 
>>From what I remember, ab does some sort of caching which 
> makes results through LVS meaningless. I forget the details, 
> and it looks like I didn't record it in the HOWTO. You might 
> look in the archive for more info. Unfortunately searching 
> for the string "ab" isn't a great prospect.
> 
> Joe
> 


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