[Mailman-Users] List performance queries
J C Lawrence
claw at kanga.nu
Thu Jul 3 05:20:56 CEST 2003
On Wed, 2 Jul 2003 16:20:32 -0500
Ed Wilts <ewilts at ewilts.org> wrote:
> How large are the mailman batches? i.e. How many physical mail
> messages go out?
Configurable. I'd set SMTP_MAX_RCPTS to be fairly high, tho not more
than 100 (see Chuq von Rospach's notes on the performance impacts and
implications of this setting for more typical MX distributions).
> Am I suicidal for even trying to handle lists this large on this size
> box, or is this even considered a large list?
Nahh, you're still will within the happy spot. You'll want a good chunk
of RAM and a nice fast IO chain (see the performance notes on the User
FAQ), but even minor tuning you should be fine.
> Next, my users want the ability to periodically refresh the subscriber
> list - they'll actually be coming from an external database.
> At the time of my subscriber refresh, how can I flush any pending
> messages to the list - ie, I don't want to get caught where an earlier
> message is still being retried when the subscriber list changes.
Don't worry about it. The list of addresses for a message is defined
when the message is approved for broadcast. If the list subscriber list
changes after that, only subsequently broadcast messages will get the
new target list.
J C Lawrence
---------(*) Satan, oscillate my metallic sonatas.
claw at kanga.nu He lived as a devil, eh?
http://www.kanga.nu/~claw/ Evil is a name of a foeman, as I live.
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