Re: apachebench not increasing troughput

[Jan Klopper <janklopper@xxxxxxxxx>]

Mack,

I changed the hub (10mbit) to a switch 100mbit (2.5gb backplane)
and i see some better transfer rates now (1600 on two servers, no keepalive)

However my third server is not being allowed to play,
TCP  cluster:www wrr
 -> localhost:www                Local   1      0          14108
 -> 192.168.12.9:www             Route   0      0          0
 -> 192.168.12.7:www             Route   1      0          14119
 -> 192.168.12.8:www             Route   1      0          5

As you can see, the last server (192.168.12.9) is down.
But the seconds realserver (192.168.12.8) is up and is recognized.
It gets a couple of redirects, but not nearly as much as the rest.
I restarted ldirectd to see if that would help, but it didn't.

Any clue?

thanks.

Mack.Joseph@xxxxxxxxxxxxxxx wrote:

> 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 07:28:32
> AM:
>
>  
>
> > Mack,
> >
> > The director is indeed not forwarding ssh (22),
> >    
> fine
>
>
>  
>
> > How can i check for persistent connctions on the server side?
> >    
> Someone else will have to help here. I haven't set it up, but
> when the subject of httpd persistance comes up, people talk
> about keepalives. I don't know that they are the same thing yet
> (anyone know?).
>
>  
>
> > AB lets me choose wheter or not it should use keepalive connections.
> > (-k   Use HTTP KeepAlive feature)
> > If i don;t use it i get 570 pages/sec.
> > If i do use it, i get aprox 1500 pages/sec.
> >    
> consistent with it being the same thing.
>
>  
>
> > I have a troughput of 400Kbytes per sec, will test packages soon.
> > (need to let my head/ears rest from the machines buzzing next to me :P
> >    
> )
>  
>
> > The requested pages are extremely small (13 bytes), but
> > there might be whole lot of http/tcp overhead involved which is not
> > counted inside tht 400Kbytes per seccond  amount.
> >    
> yes read
>
> http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.performance.html#8000pps
>
> if your packets are all ACKs and 13byte pages, you can saturate your
> link with
> very little delivered payload.
>
> Joe
>
>
>