I manage the webmail for UNC Chapel Hill. We have up to about 1500 concurrent users on our F5 load balancer supporting 45000 webmail users. Our version is behind due to creating a fork of RC (0.2?) to support our IMAP custom mailbox requirements. We have 5 apache front ends (running imapproxy) in zones on sun hardware. We have one mysql server in production and one in hot standby. We have two openldap servers running in mirromode for the address book data.
James
On Mar 22, 2011, at 11:18 AM, Javier Miguel RodrÃguez wrote:
with 1500 concurrent users you mean 1500 different users connected to the web interface at the same instant? if so you will need more than a single web server and, perhaps, also a mysql cluster on different hosts than the web servers. (also don't forget to use imapproxy to avoid to start/stop imap connections every click of the user)
Our server has 12 GB and ram & 1 quad core cpu (Intel i7 Nehalem),SAS RAID 1+0 BBWC. That should be enough to handle that load, we are asking for real-world experience about this.
We are going to use jmeter to simulate load anyway, does anybodyhave real-world experience with this kind of load?
Regards Javier-- List info: http://lists.roundcube.net/users/ BT/893d80ae