A New Theoretical Approach: A Model Construct for Fault Troubleshooting in Cloud Computing

Table 3

Fault reasons for the start-up failure of a host server.

Fault category	Fault causes	Measurement level
CPU utilization	% CPU time used by host CPU during normal sampling period (host-CPU-usage); % CPU time during which the CPU of the VM was actively using the physical CPU (VM-CPU-usage); % CPU time during which the CPU of the VM was ready but could not get scheduled to run on the physical CPU (VM-CPU-Ready-Time)	VM, host
Memory	% of used memory (memory usage)	VM, host
Network	% of network usage (bandwidth)	VM, host
I/O storage	% of disk usage (throughput)	Host
Others	Cooling and power	Host