RE: High LOAD on Pen Server

From: Harford, Ken <kharford_at_constantcontact.com>
Date: Wed, 15 Oct 2008 12:17:31 -0400

Thanks Ulric

Is this the info you were asking about?

fs.file-max = 381099

lsof -p 19959 | wc -l = 357 (19959=PID of VIP with high CPU)

netstat | grep -c 10.x.x.x = 186 (number of smtp connections VIP IP)

Input = 140000 msgs per min

Output = 100000 msgs per min

Ken

-----Original Message-----
From: owner-pen_at_siag.nu [mailto:owner-pen_at_siag.nu] On Behalf Of Ulric Eriksson
Sent: Wednesday, October 15, 2008 1:57 AM
To: Harford, Ken
Cc: pen_at_siag.nu
Subject: Re: High LOAD on Pen Server

On Tue, 14 Oct 2008, Harford, Ken wrote:

> I have a pen load balancer on a Dell 1435 (Quad Core) with
> CentOS release 5 (Final), running pen-0.17.2
>
> I have pen instance that generates a very HIGH CPU load up to
> 85% with this one instance. It has 16 IP addresses associated
> with it.
>
>
> pen -r 10.x.x.x:25 10.x.x.x 10.x.x.x 10.x.x.x 10.x.x.x 10.x.x.x
> 10.x.x.x 10.x.x.x 10.x..x.x 10.x.x.x 10.x.x.x 10.x.x.x 10.x.x.x
> 10.x.x.x 10.x.x.x 10.x.x.x 10.x.x.x
>
>
> Any ideas??

High cpu load is normal for a busy pen instance. How many clients
are connected? What is the overall throughput?

A few options to check out in the man page:

-C port
         Specifies a control port where the load balancer
        listens for commands.

-d
        Debugging (repeat -d for more). The output goes to
        stderr if we
        are running in the foreground (see -f) and to
        syslog (facility
        user, priority debug) otherwise.

-f
        Stay in foreground.

-w file
        File for status reports in HTML format.

(Can you believe I did "apt-get install pen" to get the manpage
although I have the source right here. I'm too lazy.)

Ulric
Received on Wed Oct 15 2008 - 18:17:33 CEST

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