Thanks for sharing your story. There are quite a number of large Cyrus-IMAP installations around the world, especially in the Higher-Education industry. We did a mass e-mail migration last year from OpenVMS to Cyrus/Postfix on Linux 2.6. Comparing with UC-Davis, our systems have less activity as our Faculty/Staff are using MS Exchange. 40K student users were split to 2 backends. We further divided these users to four 7-disc RAID5 sets (10K users each) on an EMC SAN. Cyrus BDB directories use separate mirror sets (also on the SAN). Based on your description, there is a bottleneck of how many concurrent processes a backend can handle. Although this might be Solaris-related, I am very interested in the ongoing investigation into this issue. I believe that Cyrus Replication setup can perform better for high volume sites. Jack C. Xue ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
