After doing some research on SLM it looks like it is the way to go if you are running Virtuozzo 3.0. What is SLM, “Virtuozzo Service Level Management (SLM) is a system that maintains and allows administrators to configure and control the levels of service (i.e., the set of ‘promises’) provided to VPS owners.“
I came across some different ways of enabling SLM on the VP Node, by far the best was the information about how to enable it without a Node reboot. If you are running a current version of Virtuozzo you can do this with pretty much a simple modprobe. Just connect to the VP Node of your choice and run the following commands. These are the steps I took to enabled SLM on my 512mb Virtual Dedicated server.
modprobe slm_core
Edit the following files and make said changes
/etc/sysconfig/vz and change the SLM entry to slm=yes
/etc/sysconfig/vzagent/vzagent.conf Locate the SLM entry, change it to 1.
Now you need to enable SLM on your Virtual Dedicated server. Since mine was a 512mb server I enabled it as shown to give it dedicated 512mb, with a burstable 1024mb.
vzctl set 408 –slmmode all –slmmemorylimit 512M:1024M –save
To check your settings you can login to your vps and use the free command.
free -m
If everthing went as planned you should now have an SLM enabled Virtual Dedicated server.