I am facing a big problem with Zimbra's memory handling capabilities. The problem is that my server has been upgraded from 2GB RAM to 8 GB and I see the RAM utilization is around 3 GB-4GB and suddenly the Free memory gets down to 50MB. I am here by attaching chart from hyperic, which shows the same. I have same problem at one other installation. I have made changes to mailboxd_java_heap_memory_percent = 20 and mysql_memory_percent = 25 but still this sudden unavailability is free memory is a puzzle.
I had to restart the machine and the free memory is back to normal. I have tried restarting zimbra services but it did not help. I think there is some problem with zimbra's memory handling.
My version is: Release 5.0.10_GA_2638.RHEL4_20081003035619 RHEL4 FOSS edition