LVS
lvs-users
Google
 
Web LinuxVirtualServer.org

Re: About traffic load

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: About traffic load
From: Roberto Nibali <ratz@xxxxxx>
Date: Wed, 28 Mar 2001 11:41:24 +0200
Hi,

Very nice ascii sketch!! How long did this take to draw?

> Hi, every one.
> 
> How are you?

Fine, how are you?
 
> There is a problem about traffic load.
> 
> We have used two kind of cpus to test the traffic load. One is Celeron566, and
> the
> other is  Pentium3-700. The result is the following:
> 
>             Celeron566 ------ 1050 Req/Sec
>             Pentium3-700 ----- 700 Req/Sec

I don't believe it. This must be a wrong setup or a damaged hardware component.
Its impossible that a lousy Celeron is faster then a P3. Sorry pal, such is
life.
 
> The web monitoring tool is WebBench4.0.

Never tried but this is not the point anyway.
 
> [Enviroment]
> 
>   +-----+
>   |     |
>   | CL1 +----+                                    +------------+
>   |     |    |                                    | RS1        |
>   +-----+    |                                    | CPU P3-550 |
> 192.168.0.16 |                              +-----+ MEM 128MB  |
>   +-----+    |                              |     | W2K        |
>   |     |    |                              |     |192.168.0.61|
>   | CL2 +----|                              |     +------------+
>   |     |    |         Director             |     +------------+
>   +-----+    |    +---------------------+   |     |   RS2      |
> 192.168.0.17 |    |CPU Celeron566/P3-700|   |     | CPU P3-500 |
>   +-----+    +----|MEM 128MB            |---+-----+ MEM 64MB   |
>   |     |    |    |Linux Kernel 2.2.15  |   |     | Linux      |
>   | CL3 +----|    |LVS 0.9.13           |   |     |192.168.0.62|
>   |     |    |    |192.168.0.51         |   |     +------------+
>   +-----+    |    +---------------------+   |     +------------+
> 192.168.0.100|       VIP:192.168.0.3        |     | RS3        |
>   +-----+    |       Schedule:LC            |     | CPU P3-450 |
>   |     |    |       HB:Ping HTTP           +-----+ MEM 128MB  |
>   | CL4 +----+                                    | Linux      |
>   |     |                                         |192.168.0.63|
>   +-----+                                         +------------+
> 192.168.0.110

I assume you're using LVS_DR seeing your setup. But why are you using
2 NICs? To avoid the arp-problem? So the DGW for the all RS is the LB?
With this setup the replies must travel back through the director and 
then you have the performance problems of LVS_NAT. Please change the
setup to the LVS_DR setup depicted in the howto. And then we might 
check out your problem again.

> I kon't know why the higher the frequency of cpu is, the slower the traffic
> is.

It's impossible IMHO. But YMMV,

Roberto Nibali, ratz

-- 
mailto: `echo NrOatSz@xxxxxxxxx | sed 's/[NOSPAM]//g'`


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