MailScanner is responsible for SWAP usage!

[Michael S.]

What's the point? If you can't see my point then I can't help you with that.

Here is the point for clarification. 3 x 20MB = 60MB of ram that is
supposedly used by MS. We process less than 1,200 messages a day on this
server in total. So the question is, why does the box swap when MS is
installed on a box with 4GB of memory? One the boxes that do not have MS
installed we are running the identical setup and there is ZERO SWAPPING. If
I remove MS and reboot the server there is no swapping.

Hope this clarifies the point I was trying to make which obviously you
didn't get from the original message.

Thanks

-----Original Message-----
From: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Raymond
Dijkxhoorn
Sent: Sunday, May 21, 2006 2:02 PM
To: MailScanner discussion
Subject: Re: MailScanner is responsible for SWAP usage!

Hi!

> With 200 websites on one server we have never seen a load above .50 even
at
> 4am when the box is running daily crons.
>
> Without MailScanner installed our SWAP usage is ZERO. After we placed
these
> servers into production 3 weeks ago we let the server run without MS to
make
> sure they were stable. Swap space prior to installing MS was still zero.
>
> Last week we install MS with only 3 child processes selected in
> MailScanner.conf. Now our swap space has started to increase on a daily
> basis. One one box for example swap space is already at 650K and rising.
So
> that would mean that MS is responsible as we have Zero swapping without MS
> installed.

Whats your point? So it uses RAM? Feel free to switch it off.

We have a couple of dual opterons running, processing a couple of hundred 
thousand mails a day, also 4 GIG RAM inside, no swapping at all there. So 
it must be a combination of what you are doing on the box.

[root at vmx100 ~]# free
              total       used       free     shared    buffers     cached
Mem:       4046976    3771184     275792          0     288720     251280
-/+ buffers/cache:    3231184     815792
Swap:      4192956          0    4192956

[root at vmx100 ~]# w
  19:56:56 up 11 days,  4:35,  1 user,  load average: 1.11, 1.21, 1.25
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    ns2.prolocation. 19:56    0.00s  0.01s  0.00s w

Knowing this box is processing 2-5 mbit/s mailflow continuesly i can 
really say, please provide more info, and also, what you wanna know. Your 
posting is somehow open and only telling it used ram. Yes, MS uses ram, 
read the FAQ thats pretty normal.

We have the mailscanner boxes running dedicated, might be wise to try 
something alike.

Bye,
Raymond.
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