The mailing list for listmasters using Sympa

[Aumont - Comite Reseaux des Universites <address@concealed>]

Patrick von der Hagen wrote:

> Hi all,
>
> some time ago someone mentioned on this list that sympa does extensive 
> caching of list-information (both list-configuration and subscribers). 
> If I understood that e-mail correctly, sympa does that for each daemon 
> (bounced, archived, sympa, etc.) and so memory-usage is quite high.

Not exactly. Sympa do NOT store in memory subscribers list but just list 
configuration. So memory usage is not concerned by "large lists" it is 
by "many lists".  "many lists" means 5000 lists or more.  Subscriber 
cache is store in database. Better managment of this cache is all your 
lists use parameter
"data_source include2" which is the default.

Large lists suppose to increase "MAX_SMTP" parameter in sympa.conf, it's 
to say the number of sendmail processus lunched by sympa. Teh goal is to 
minimize message distribution delay. Sendmail memory usage is also quite 
high. May be postfix will provide result ?

> Currently I run about 800 mailinglists on my listserv-installation, 5 
> having a little bit more than 10000-users, 11 between 1000 and 9999 
> users, 114 between 100 and 999 users and about 700 smaller ones. Most 
> of the lists are low-volume, especially the big ones are only used for 
> announcements once a month.
>
> Currently I have only 1GB of RAM available. Might that be enough to 
> run sympa or is it to little?
> Can anyone provide figures relating to number of lists, list-size and 
> memory-usage?

It should be enough, depending on the usage of your service : if many 
users contact your web site you may want to have more fcgi server and in 
this case you may need more memory.

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