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Re: [lvs-users] Issues with weighted round robin

To: Graeme Fowler <graeme@xxxxxxxxxxx>
Subject: Re: [lvs-users] Issues with weighted round robin
Cc: lvs-users <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
From: Himanshu Raina <himanshu.raina@xxxxxxxxxx>
Date: Thu, 29 Jul 2010 17:58:21 +0530
The servers are different in terms of configuration and OS installed. I
have changed the weight to 9:1 keeping in mind the server performance
and somehow it seems to be working fine now. I hope it won't lead to any
problems.

On Thu, 2010-07-29 at 16:29 +0530, Himanshu Raina wrote:
> The current stats output is as follows
> 
> Prot LocalAddress:Port               Conns   InPkts  OutPkts  InBytes
> OutBytes
> 
> TCP  192.168.2.1:80               1877189    39344549       0   11215M
> 0
>   -> 192.168.2.8:80               599836     25601414        0
> 7877M        0
>   -> 192.168.2.5:80              1277353      13743135      0    3338M
> 0
> 
> 
> 
> On Thu, 2010-07-29 at 16:20 +0530, Graeme Fowler wrote: 
> > Hi
> > 
> > Firstly, your reply to the list didn't go through because somehow you
> > mangled the address.
> > 
> > On Thu, 2010-07-29 at 16:09 +0530, Himanshu Raina wrote:
> > > I understood the connection establishment and the termination part. So
> > > one way of dealing with this is to assign weights accordingly. Knowing
> > > that the server with higher weight processes request much faster you
> > > should assign maximum weight to it. Like in my case when I changed the
> > > weight from 7:3 to 9:1 the number of active connections reduced on the
> > > server which was earlier having higher number of active connections and
> > > every new connection in this case was given to the server with higher
> > > weight. Correct me if I'm wrong.
> > 
> > Please supply the --stats output as requested after running for a while.
> > The "snapshot" view of active/inactive connections is not very helpful
> > in this discussion.
> > 
> > The faster server can move more connections more quickly from active to
> > inactive than the slower, so can appear to be handling fewer connections
> > when viewed in this way. You need to look at the "big picture" after
> > it's been running for a while to get a true view of how requests are
> > being spread between realservers.
> > 
> > Graeme
> > 
> -- Regards,
> 
> Himanshu Raina -- 
> A great empire, like a great cake, is most easily diminished at the edges.
>               -- B. Franklin
-- 
Regards,

Himanshu Raina 
-- 
"America is a stronger nation for the ACLU's uncompromising effort."
-- President John F. Kennedy


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