Diana Ventimiglia wrote:
Sorry I wasn’t more descriptive before. We are running PHP 5, apache 2 and Redhat Linux EL4 with dual Xeon 3.0 CPU, and 4 GB of RAM.
I have heard reports of people getting 100% CPU from their IMAP daemon having an incorrectly configured authentication mechanism, typically with login failures. Also, when loading large folders or messages, it is typically the IMAP daemon chewing up the CPU time and not the httpd process.
I haven't seen 100% CPU from normal RoundCube use, though. The closest I have come is when working with attachments (usually downloading).
The highest I have personally seen apache use is ~20% CPU on an old PIII-800 when using attachments. I have seen the IMAP daemon go >50% when loading or searching in a large folder (~3000 messages).
Have you watched the process list with top to see what process is actually using the most CPU time?
Jim