I have a Centos server that seems to be getting quite slow for certain tasks. I don't assume this has anything to do with webmin or virtualmin, but thought it might be helpful to get feedback from this group.
The server is a core2 quad with 8gb of ram. It has VM-Pro and about 180 virtual servers. For the most part the server performs fine, loads are generally below 1 through out the day with occasional jumps.
The slowness is observered while doing backups to the same drive, uploading backups from another server, doing system updates and reboots. Not only is the server slower based on what I remember but I have another Centos server also with 8gb of ram, however a slower duo core CPU to make comparisons with. I'll call the slow server, server 1 and the second server, server 2.
Server 1 takes 3.25 hours to backup 25gb to the same drive (looks like the load stays around 3 with maybe a spike to 6), server 2 backs up 45gb in 1.75 hours. Server 1 takes about 3 times as long to do system updates and to come back online from a reboot after a kernel update. and lastly it takes about 13 hours to backup server 2 to server 1. While I can backup server 1 to server 2 in about 3 hours.
Server 1 has high loads when rebooting, typically hits 20+ within a couple minutes of coming online. If apache needs to restart and there are 550 or so processes running, the load will hit 20+. Server 2 doesn't come anywhere close to this.
This is certainly not an emergency, I'm just hoping for some friendly conversation to send me in the right direction to analyze and get a handle on this.