> Our biggest currently is about 30GB I think. >> I think the issue you will encounter first is clients will start to fall >> down when folders exceed a 'reasonable' number of messages. Common IMAP >> clients I've seen start to exhibit severe performance issues beyond a >> few hundred thousand messages. > On a 32 bit architecture: we had one folder with over a million messages > which was causing processes to run out of virtual memory trying to map > the cache file in. This wouldn't be a problem with a 64 bit userland. very impressive to have so much messages in one folder therefor in one partition!. But with so many messages in one folder, I think that cyrus.index and even more cyrus.cache are huge. Is mmap still efficient ? map a gigabit file should cost a lot of I/O and a relatively long reponse time to just access the records of the most recent emails. Is it time to break the design of one cyrus.index and cyrus.cache per folder by something more scalable ? Ce message et les pièces jointes sont confidentiels et réservés à l'usage exclusif de ses destinataires. Il peut également être protégé par le secret professionnel. Si vous recevez ce message par erreur, merci d'en avertir immédiatement l'expéditeur et de le détruire. L'intégrité du message ne pouvant être assurée sur Internet, la responsabilité du groupe Atos Origin ne pourra être recherchée quant au contenu de ce message. Bien que les meilleurs efforts soient faits pour maintenir cette transmission exempte de tout virus, l'expéditeur ne donne aucune garantie à cet égard et sa responsabilité ne saurait être recherchée pour tout dommage résultant d'un virus transmis. This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Atos Origin group liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted. ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
