[horde] Bottleneck ? CPU or HDisk IO or RAM

[Michael M Slusarz]

Quoting Linux Advocate <linuxhousedn at yahoo.com>:

> Guys, just wondering. For a horde groupware webmail edition, what  
> will be the bottleneck if there are about 1000 users? The CPU ? or  
> the HDisks?
>
> Will a new box with Dual Core Dual Xeons,  8GB RAM and 7.2k rpm  750  
> GB SATA disks ( 6 )  be sufficient?
> Anybody here got some sample specs of some running machines with the  
> groupware?

For webmail, at least, the bottleneck is almost always the IMAP  
server.  To a certain extent, Horde/IMP can code around this (IMP 5 is  
much more efficient with imp->IMAP traffic for example), but IMAP  
servers tend to be very heavy hard drive I/O processes.  Especially  
when you have many users, and these users all like to maintain 10,000+  
message INBOXes.

michael

-- 
___________________________________
Michael Slusarz [slusarz at horde.org]