On Donnerstag 28 Mai 2009 Andreja Babic wrote: > Database dbmail took 48G while cyrus mail storage had 30G for the > same amount of mails.
Boah, a very huge difference! I'd love to know what dbmail 2.3 would be in size. > What I have got from tests is that search is much faster on dbmail > and fetch is much faster on cyrus. > > For example on the mailbox which had 39661 unread mails search on > cyrus imap took 20 seconds. The same operation on identical mailbox > on dbmail took 12.7 seconds. Please also compare results of the searches. Dbmail has a bug somewhere (don't remember exactly, lookup archives, maybe of -dev), which will not necessarily find all messages. Please also do different kinds of searches (subject, From:, any header, any content, etc.). > On the other side, fetching headers from all mails in inbox with > "fetch 1:* body[header]" took on dbmail 20 seconds while the same > operation on cyrus took 3 seconds. Please perform such accesses always 5 times in a row, and remember each time. Caches will change performance on both products, would be interesting to see how much. Are you also able to do this: *) simulate a single user signing in, read list of all mailboxes (should be 20 or so with subfolders), then for every mailbox get list of messages, read some messages. Close. Make other tests with other users, and deliver about 100 messages into that users mailboxes. Reconnect as that user again, get list of new mails. read some of them. close *) then rerun above test with 20 users in parallel. *) then again with 50 users in parallel. Maybe we can see which product scales better. Although we have no idea which hardware you test on. mfg zmi -- // Michael Monnerie, Ing.BSc ----- http://it-management.at // Tel: 0660 / 415 65 31 .network.your.ideas. // PGP Key: "curl -s http://zmi.at/zmi.asc | gpg --import" // Fingerprint: AC19 F9D5 36ED CD8A EF38 500E CE14 91F7 1C12 09B4 // Keyserver: wwwkeys.eu.pgp.net Key-ID: 1C1209B4
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