I'm currently evaluating Zimbra for use in our hosting environment, to offer as a service to our clients. I have a concern about memory usage and some bugs and would love some feedback before we get too far down this road.
I'm testing the system on a CentOS 5.1 x86_64 VPS with 1.5GB RAM allocated. with only 5 or 6 users, currently none of which are logged in, the RAM usage is the entire 1.5GB + 360MB Swap. I know Java based applications tend to suck RAM like nothing else, but this seems ridiculous to me... is this really normal?
What will I see when I have 100 or 500 active users? What kind of machine specs will I need to be able to provide quality service to these users?
What kind of mileage would I get out of a Core2Q 6600 w/8GB RAM?
And regarding bugs... I see people posting on the forums and most issues seem to get a response - very encouraging. Can anyone comment on how they've been doing with this?