All VMs are configured with Star
Technology Projects Centres
MB of RAM. An Apache server runs on each VM. We Star
Technology Project Centres
use httperf to invoke CPU Star Technology
Projects Centre intensive PHP
scripts on the Apache server. This allows us to subject the VMs to
different Star Technology Project
Centre degrees of CPU load by adjusting the client
request rates. Star Technologies Projects
Centres The utilization of other resources are kept
low. We first Star Technologies Project
Centres increase the CPU load of the three VMs on
PM1 to create an overload. Our algorithm resolves the overload by
migrating VM3 to Star Technologies Projects
Centre PM3 . It reaches a stable state under high
load around Star Technologies Project
Centre seconds. Around seconds, we Star
Technology Projects Centers
decrease the CPU load of all VMs gradually.