Workload Manager
Installations today process different types of work with
different completion and resource requirements. Every installation wants to
make the best use of its resources and maintain the highest possible throughput
and achieve the best possible system responsiveness. Workload management makes
this possible.
One of the strengths of the zSeries platform and the z/OS
operating system is the ability to run multiple workloads at the same time
within one z/OS image or across multiple images. The function that makes this
possible is dynamic workload management, which is implemented in the Workload
Manager component of the z/OS operating system.
The idea of z/OS Workload Manager is to make a contract
between the installation (user) and the operating system. The installation
classifies the work running on the z/OS operating system in distinct service
classes and defines goals for them that express the expectation of how the work
should perform. WLM uses these goal definitions to manage the work across all
systems of a sysplex environment.
http://www.redbooks.ibm.com/redbooks/pdfs/sg246472.pdf
Welcome to WLM/SRM
System Programmer's Guide to: Workload Manager
This
IBM Redbook gives you a broad understanding of the Workload
Manager component of the z/OS system. It covers basic aspects of Workload
Manager (WLM) together with the new functions available in z/OS V1R8. The book
provides a discussion about how to create WLM policies based on business goals
and the types of transactions that you run in your systems.
This book also provides information about how to implement
the WLM functions, in addition to suggestions about how to classify the
different workloads to WLM so that it can best manage the different types of
units of work. You will find information for effective performance analysis and
a description of how to use the WLM functions to achieve better throughput in
your environment. This book also provides best practices samples to better
understand how to set up your classification and tune it.
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