Why manage workloads on IBM Z?

Your workloads have different, often competing, completion and resource requirements. The IBM Z® platform can run multiple workloads at the same time within one z/OS® image or across multiple images; make the best use of the installation resources; maintain the highest possible throughput; and achieve the highest system resiliency and availability.

Meet the platform for mission-critical workloads

The new IBM z15™ requires 23 times fewer cores than comparable x86 servers, and delivers a 27% lower overall TCO over 5 years when running mixed workloads consisting of both open source and IBM proprietary software.*

Explore IBM Z workload management capabilities

IBM Workload Manager for z/OS (WLM)

Define performance goals for workloads in business terms. WLM will monitor the system and adapt how much resource, such as CPU and storage, should be given to the work.

IBM z/OS Management Facility (zOSMF)

Manage your z/OS systems through a browser at any time, from any location, and reduce the expertise needed to manage WLM.

IBM z/OS Resource Measurement Facility (RMF)

Collect performance data for z/OS and Sysplex environments — and tune and configure your system — with this optional feature.

z/OS Capacity Provisioning (CPM)

Address needs for short-term workload and processor utilization fluctuations for which On/Off Capacity on Demand or soft capping changes apply.

IBM Z Instant Recovery

Process your transactional backlog by up to 2x faster and process your batch backlog by up to 2.5x faster.

IBM HMC Mobile

Monitor your IBM Z mainframes and partitions from anywhere in the world.

WLM resources

Find tools, education, and product information.

RMF resources

Find presentations, new information and tools.

CPM resources

Find tips, education and product information.


An introduction to IBM Workload Manager for z/OS.


Learn about z/OS Capacity Provisioning Manager.

z/OS Workload Management

Understand the functions of workload management and how to make the most of it.


Understand z/OS Resource Monitoring Facility, what it can do, and how to use RMF sessions.


Learn about the functions of Capacity Provisioning and how to make the most of it.

WLM Redbook

Learn about effective performance analysis and how to use the WLM functions for better throughput in your environment.

RMF Redbooks

Learn about performance monitoring using Resource Measurement Facility (RMF).

CPM Redbooks

Learn about Capacity on Demand on IBM Z mainframes.

LPAR design tool

This tool helps you plan the LPAR layout of your Central Processor Complexes.

Topology Report

The report displays logical processor topology.

SMF 113 reporting

This reporting tool provides insight into usage of cache structures.

Service Definition Formatter

Use this tool to format your WLM service definition on your workstation.


This small, ISPF-based tool displays application environments currently used on your z/OS system.


*Disclaimer: The workloads consisted of an airline flight reservation system (running MongoDB and node.js) and a transactional core banking application (running WAS and Db2). Four instances of the airline system were run, one instance simulating a Dev/QA environment, and three instances simulating a Production environment. Seven instances of the core banking application were run, one instance simulating a Dev/QA environment and six instances simulating a Production environment. Dev/Test and Production environments were differentiated by their CPU utilization levels. Intel servers are generally run at an average of 10-30% utilization per IT Economics data.