Beta 4.49.3 released

[Steve Freegard]

Hi Julian,

On Mon, 2005-12-19 at 18:02 +0000, Julian Field wrote:
> Hopefully the problems with the speedup code and sendmail are now fixed. 
> It is only implemented for sendmail, getting any similar effect with 
> Postfix is going to be very awkward.
> 
> Please test this and see how much faster it is, and I would be very 
> grateful if you could report back what you find. Initial testing of this 
> looks promising.
> 

Just done a speed comparison using between the versions using a virtual
machine.

The guest O/S was CentOS 4.2 with 256Mb RAM.  MailScanner was set-up to
use the clamav command-line scanner with SpamAssassin disabled (all
other settings were defaults) with a batch size of 999 messages and in
debug mode.  Sync-on-write on /var/log/maillog was disabled
and /var/spool/MailScanner/incoming was mounted on tmpfs.  Both versions
were tested with a batch of 227 messages (mainly Sober-U, phishing and
general spam).

The timing was done by running:

cd /usr/sbin; time MailScanner /etc/MailScanner/MailScanner.conf

To calculate the results - I ran the same batch of messages through each
version of MailScanner 5 times then took the average time.

4.48-4:     1m29s
4.49-3:     0m50s

Warning: my maths is pretty terrible - but I think that works out at
around a 56% improvement!!!

Cheers,
Steve.

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