performance testing new server, results

[Martin.Hepworth]

Chris

I think the recommended number of children is start at 5 children per
CPU CORE so you should be able to run 10 children.

Tuning the batch size is next (add 5 see any difference, remove 5 note
difference).

Have a look in the wiki for optimisation tips..

http://wiki.mailscanner.info/doku.php?id=maq:index#optimization_tips

and see how these affect your performance...

Also check which third party Spamassassin rules that a physically larger
than others (bigevil.cf for example should NOT be used).

--
Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300
> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Chris Yuzik
> Sent: 21 February 2007 18:09
> To: MailScanner discussion
> Subject: performance testing new server, results
>
> Hi everyone,
>
> As I mentioned in a previous thread or two, we're almost ready to roll
> out our new mail server. To stress test it, I have essentially
captured
> several hours worth of live queue files from the current production
> server, both spam and ham. To be even more mean to the new box, I have
> disabled spamassassin caching. Finally, (and I feel like a bit of a
mad
> scientist), I simply copied all of those queue files (about 4500) into
> /var/spool/mqueue.in. Mwahahaha.
>
> The server is chewing through them in batches of 30, with the
> recommended of 5 children per CPU (we have dual 3 GHz Xeons in this
box)
> there are 10 children. With all the features turned on, including
> fuzzyocr (cranked up), bayes and clamav, but spamassassin caching off,
> it seems to be averaging about 140 seconds per batch of 30. Server
load
> is averaging 2.56 over last 15 minutes. So in past 20 minutes, it's
> handled about 2500 messages.
>
> Does this performance seem about right? Or should it be significantly
> better?
>
> Thanks,
> Chris
> --
> MailScanner mailing list
> mailscanner at lists.mailscanner.info
> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>
> Before posting, read http://wiki.mailscanner.info/posting
>
> Support MailScanner development - buy the book off the website!




**********************************************************************
Confidentiality : This e-mail and any attachments are intended for the 
addressee only and may be confidential. If they come to you in error 
you must take no action based on them, nor must you copy or show them 
to anyone. Please advise the sender by replying to this e-mail 
immediately and then delete the original from your computer.

Opinion : Any opinions expressed in this e-mail are entirely those of 
the author and unless specifically stated to the contrary, are not 
necessarily those of the author's employer.

Security Warning : Internet e-mail is not necessarily a secure 
communications medium and can be subject to data corruption. We advise 
that you consider this fact when e-mailing us. 

Viruses : We have taken steps to ensure that this e-mail and any 
attachments are free from known viruses but in keeping with good 
computing practice, you should ensure that they are virus free.

Red Lion 49 Ltd T/A Solid State Logic
Registered as a limited company in England and Wales 
(Company No:5362730)
Registered Office: 25 Spring Hill Road, Begbroke, Oxford OX5 1RU, 
United Kingdom
**********************************************************************