Objectives

The project objectives with respect to the impact of live guest relocation and resource requirements.

The objective of this project is:

To show the impact of live guest relocation on a Java™ application workload that runs in a single guest virtual machine, without any external resource pressure in order to eliminate external factors. The Java workloads are expected to have a specific memory pattern.
Particular focus is on the parameters such as:
- The relocation time that represents the overall time expended by z/VM® to perform a live guest relocation
- The quiesce time that is the time during which a relocated virtual system is stopped; this is considered the primary metric for evaluating the performance of the live guest relocation process
To show the resource requirements for live guest relocations, such as:
- The speed, data rates and I/O rates of ISFC logical links and their FCTC connections
- The use of CPU and memory resources by z/VM for the live guest relocation process
- The impact observable by a guest operating system, such as reduced availability of memory and CPU resources
To give recommendations for configuring z/VM systems in order to optimize the live guest relocation process

Note: In this paper memory and storage sizes are expressed in multiples of 1024 byte, but data rates are expressed in multiples of 1000 byte.

Table 1 lists the notational conventions applied in this paper, in accordance to IEC 60027 - 2 Amendment 2: