[Mimedefang] Embedded Perl (continued)

Amit Gupta amit777 at gmail.com
Tue Sep 22 11:20:16 EDT 2015

We have 16GB of ram, though there are other processes running on this
machine such as DB that will be segmented later.  I'm curious how much
resident memory each of your mimedefang.pl processes uses?  I haven't
been tracking my mimedefang.pl memory usage over time, so I was a
little surprised to see it at 125Mb.  Before I go down a rabbit hole
of minimizing it, i want to make sure it's actually significantly
higher than your situation.

Also, Am I right in thinking  the forking issue is not such a big deal
because the processes are pre-forked and stay running for some amount
of time and eventually get cleared down to your minimum setting.   I
have my min processes set to 10, and max to 100.. And my monitoring
system shows that I have about 20 running mimedefang.pl processes on

On Tue, Sep 22, 2015 at 8:12 AM, Dianne Skoll <dfs at roaringpenguin.com> wrote:
> On Tue, 22 Sep 2015 07:57:18 -0700
> Amit Gupta <amit777 at gmail.com> wrote:
>> My situation is that the number of mimedefang.pl processes jumps to
>> about 70 during peak loads (we are processing a couple hundres
>> messages per minute on average).
> How much RAM do you have?  70 parallel scanners is not outlandish on
> busy machines.  Our biggest scanning machine is configured to allow
> up to 400 scanners.  It's a pretty powerful machine with 48GB of RAM,
> though, and our volume is 5-10x yours.
>> I see you mentioned using embedded perl prevents
>> forking entire processes.
> No... it still forks each time, but it doesn't exec a new program.
>> So would my RAM requirements be reduced drastically?
> Probably not.  As I said, embedded Perl helps a little bit, but not
> dramatically.
> Regards,
> Dianne.

More information about the MIMEDefang mailing list