[Mailman-Users] Mailman chewing up resources

Geoff Shang geoff at QuiteLikely.com
Fri Mar 12 14:22:16 CET 2010


We run a VPS running Debian with Mailman 2.1.11 and Postfix.  Python is 

Up until a couple of weeks ago, we were running a number of quite small 
mailing lists (max 200 members) with no problems.  But then we imported 
the subscriber list of a list that we'd moved from Yahoogroups that 
contained 800+ members, and that's when the trouble started.

This list not only has 800 or so members, but it's a fairly active list.

We also have quite a number of deferred messages from Yahoo in the queue, 
but that's a different story.  We've just implemented DKIM, hopefully that 
will help sort that one out.

The problem we're seeing is that if the list gets any way busy, the memory 
usage of the python process that runs Mailman skyrockets, dragging the 
system to a crawl.

We're a little clueless as to how to debug this further, so any help would 
be appreciated.


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