Originally Posted by devonblzx
It doesn't matter what VPS technology you are on, I believe Xen, OpenVZ, Virtuozzo, and VMWare all show the VPS's load, not the node's load.
That's correct. In the past two years i've had vps based on all the 4 technologies and i don't recall any showing host machine data, maybe a very old virtuozzo version ? Or maybe some pseudo-vps technologies, like UML/Jails ?
It's interesting to note anyway, that in poorly isolated environments [I've especially noticed this in virtuozzo3 with non scheduled-cpu (equal share)]; or anyway on overloaded servers (this could be the case) you may notice severe spikes in your VE load, even if you're not doing anything special.
That could be easily explained if you consider the load is "relative", if the host server is not responding fast of course every simple operation will take more time than usually needed, thus increasing your own VPS server load, even if you're running the same usual tasks.
So, parasyte, if your internal load suddenly increases and you're not doing anything it means someone else (a neighbour, or the like) is overloading the host server, or some heavy scheduled tasks (like periodic nightly backups) are in place.
I've obtained 20/40.00 loads on an idle VE, just because some idiotic neighbour was "achieving" 500/1000.00 loads on his own.
So it may very well happen.