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Re: apachebench not increasing troughput

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: apachebench not increasing troughput
From: Mack.Joseph@xxxxxxxxxxxxxxx
Date: Tue, 01 Mar 2005 07:00:57 -0500
Joseph Mack PhD, High Performance Computing & Scientific Visualisation
LMIT, Supporting the EPA Research Triangle Park, NC 919-541-0007
Federal Contact - John B. Smith 919-541-1087 - smith.john@xxxxxxx

lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx wrote on 03/01/2005 06:05:17
AM:


>  From the client i can connect with ssh to the VIP (gives
> me the active director)

I take it that the director is not forwarding ssh?


> From the client i can browse to the VIP gives me semi
> random, (altough usually the same) realserver.

Is apache making persistent connections?

> When i do a AB (apachebench) from the client to each of
> the rip's i get aprox 560 pages/sec.
> When i do a AB from the client to the VIP, i get almost
> the same. (560 pages/sec)
>
> When i ab the VIP, i see the load rising on all servers.
> (and see apache processes in top)
>
> When i use persistent connections i get 3 times more pages/sec.
>
> I have a troughput of 460Kbytes/sec.

The important measure is the number of packets/sec - see the performance
section of the HOWTO. Your network could be the bottleneck if the
packets are small.

Joe



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