How to estimate the memory usage in cyrus imap 2.4.X ? Mailbox size is Important ? For example 5000 simultaneous IMAPS in mailboxes with 2Gb size. How much memory is needed? On Wed, Feb 8, 2012 at 10:02 PM, Robert Mueller <robm@xxxxxxxxxxx> wrote: > > > > > It looks like 3000 IMAP sessions are going to take around 8 GBytes > > > of RAM just to run, and we will need to buy additional RAM for > > > buffer cache. This isn't the end of the world: memory is cheap. I'm > > > just curious if anyone else saw a similar increase when upgrading > > > from 2.3 to 2.4. > > > > I played a bit fast and loose with memory in 2.4. You'll find that > > large mailboxes take quite a bit more memory when selected. It was a > > tradeoff against extra locking. We could save quite a lot by > > requiring changing > > I vote for not adding the extra complexity back. > > When a mid-range laptop can come with 8G of RAM, I don't think asking > for more than 8GB RAM on a server running 3000+ simultaneous IMAP > connections is a big ask these days. > > http://37signals.com/svn/posts/3090-basecamp-nexts-caching-hardware > > Rob > ---- > Cyrus Home Page: http://www.cyrusimap.org/ > List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
