Page 958 - Cloud computing: From paradigm to operation

6 Monitoring

See Table 7-1.

Table 7-1 – Parameters collected to monitor physical computing resources

Metric name Description Unit
Central processing unit (CPU) frequency CPU frequency MHz
CPU util Average CPU utilization %
CPU idle time Time of CPU is in idle status ns
CPU load CPUs have been loaded process
CPU input/output (I/O) wait time CPU I/O wait time ns
CPU idle percent Percent of CPU is in idle status %
CPU user percent Percent of CPU is in using status %
CPU I/O wait percent Percent of CPU I/O is in waiting status %
memory Volume of random access memory (RAM) MB
memory util Average RAM utilization %
memory used Used physical memory size kB
disk size Total size of disk GB or TB
disk size used Total size of disk used GB or TB
disk random/sequential read requests Volume of read requests request
disk random/sequential read request rate Average rate of read requests request/s
disk random/sequential read delay Average delay of read request ms
disk random/sequential read error Volume of read error kB
disk random/sequential write requests Volume of write requests request
disk random/sequential write request rate Average rate of write requests request/s
disk random/sequential write delay Average delay of write request ms
disk random/sequential write error Volume of write error kB
disk random/sequential read bytes Volume of reads MB
disk random/sequential read byte rate Average rate of reads MB/s
disk random/sequential write bytes Volume of writes MB
disk random/sequential write byte rate Average rate of writes MB/s
Graphics processing unit (GPU) util Average GPU utilization %
GPU idle time Time of GPU is in idle status ns
GPU load GPUs have been loaded process
GPU I/O wait time GPU I/O wait time ns
GPU idle percent Percent of GPU is in idle status %
GPU user percent Percent of GPU is in using status %
GPU I/O wait percent Percent of GPU I/O is in waiting status %
NOTE – All metrics should be measured over different durations, e.g., 1 min, 5 min, 15 min or 30 min.

7.1.2 Virtual computing resources
Virtual computing resources include any virtual component within a virtual computer system for running an
operating system, software and applications. Similarly to physical computing resources, running data and
status of resources from VMs in which the applications are currently running require collection. These data
provide a picture of how much of the VM is being utilized and helps in analysis and determination of the
scaling requirement of applications.

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