Using singleinstancestore on a large scale (thousands of recipients)

Earl R Shannon ershanno at
Tue Jan 13 09:57:55 EST 2004


We use a perl script to do what we call a "broadcast".
It loops through and delivers to each individual user.
Probably not very efficient, particularly since we have
thousands of accounts as well, but it was quick to implement
and it works.

Earl Shannon

Sebastian Hagedorn wrote:
> Hi,
> we've got Cyrus 2.1.16 running on Red Hat AS 2.1 with 
> singleinstancestore and it's working well. A common case is that mails 
> will have up to 5 recipients:
> -rw-------    5 cyrus    mail         3754 Jan 13 11:13 
> /var/spool/imap/S/user/a0620/88222.
> We haven't yet moved all our student accounts to Cyrus, but once we've 
> done that, I'd like to be able to use this mechanism for sending mails 
> to all of them. We've got around 30,000 student accounts. Now I wonder:
> - can a single inode have 30,000+ links? We're using ext3 as this is the 
> only file system supported by Red Hat.
> - can I invoke "deliver" with such a long argument list? If not, is 
> there an alternative?
> I've searched the WiKi and the mailing list archive, but haven't found 
> any reports regarding this ...
> Thanks, Sebastian Hagedorn
> -- 
> Sebastian Hagedorn M.A. - RZKR-R1 (Gebäude 52), Zimmer 18
> Zentrum für angewandte Informatik - Universitätsweiter Service RRZK
> Universität zu Köln / Cologne University - Tel. +49-221-478-55
> 87

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