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.
Using Interactive z/OS Topology Views to Optimize Processor Configuration
Being able to easily see, filter, compare, and interact with the processor topology enables analysts to easily configure their processor configuration, which is important for reducing CPU cost.
Tracking Processor Topology Changes Over Time
Processor topology can change over time, so there is a need to verify changes and understand any impact that may be the result of those changes.
How to Find Sick But Not Dead (SBND) TS7700 Tape Clusters
Rather than waiting for a remote VTS to fail, you should be reviewing these key TS7700 reports to determine if remote clusters are receiving replication data or not.
Top ‘IntelliMagic zAcademy’ Webinars of 2022
View the top rated mainframe performance webinars of 2022 covering duration, Db2, XCF, z16, and much more!
Integrating Dataset Performance (SMF 42.6) and Db2 Buffer Pools & Databases (SMF 102/IFCID 199) Data
Dataset performance data from SMF 42.6 records provides disk cache and response time data at the Db2 buffer pool and Db2 database levels when integrated with Db2 Statistics IFCID 199 data.
Evaluating and Tuning Db2 Subsystem Wait (Suspension) Times
Understanding what causes wait (suspension) time can be instrumental in improving your subsystem and application performance.
Leveraging XCF Message Activity for CPU Efficiency
The examples in this blog demonstrate how intuitive visibility into XCF message volumes combined with metrics from various XCF callers help provide a complete picture of the services XCF is performing.