Mainframe Software Cost Savings Playbook
Learn how to effectively reduce mainframe costs and discover strategies for tracking IBM software licensing metrics to minimize expenses.
Profiling zHyperLink Performance and Usage
In this blog, we demonstrate how to profile zHyperLink performance and usage by reviewing one mainframe site’s recent production implementation of zHyperLink for reads, for Db2.
Tuning TCB Switches for CICS Cost Savings
CPU 'tuning' exercises often focus on unnecessary TCB switches. In this case, changes made that reduced TCB switch time saved a ton of CPU - up to 2,000 seconds.
Mainframe Cost Savings Part 3: Address Space Opportunities
This final blog in the mainframe cost reduction series will cover potential CPU reduction opportunities that produce benefits applicable to a specific address space or application.
How A Db2 Newbie Quickly Spotlights the Root Cause of a Db2 Slowdown
This blog explores how a non-Db2 expert quickly identified latch contention arising from a Data Sharing Index Split as the root cause of a Db2 delay/slowdown.
Mainframe Cost Savings Part 2: 4HRA, zIIP Overflow, XCF, and Db2 Memory
This blog covers several CPU reduction areas, including, moving work outside the monthly peak R4HA interval, reducing zIIP overflow, reducing XCF volumes, and leveraging Db2 memory to reduce I/Os.
Using zHyperWrite to Improve MQ Logging Performance
In this blog we examine before-and-after measurements of a recent zHyperWrite implementation for MQ logging in a large z/OS environment.
Mainframe Cost Savings: Infrastructure Opportunities Part 1: Processor Cache
CPU optimization opportunities applicable across the infrastructure can often by implemented without the involvement of application teams and can benefit a significant portion (or all) of the work across the system.
How an Unexpected Drop in Response Time Led to a Quick Permanent Replication Improvement
Learn how a recent unexpected drop in asynchronous response time led to the discovery that one of the network links used for asynchronous replication went down and a permanent performance improvement.