In the past, IBM i database performance management and analysis was done using tools specifically created for database, while system performance management and analysis was done using the system performance tools. There was little integration between the two toolsets.(more…)
“Ways to Work With Your JVMs” was one of the very first ‘i Can’ blogs written. That blog covered the commands that were new in the IBM i 6.1 release for working with your JVMs.
Since that blog was written, additional interfaces have been added to the operating system that expand the ways in which you can work with your JVM jobs.(more…)
In the IBM i Performance Analysis Workshop, we reinforce the concept that many forces outside of system software or applications can influence the performance of your partition. These are typically configuration type details—anything from how you have the QPFRADJ (Performance Adjuster) system value set, to the amount of memory on your partition, to how you have your processors configured.(more…)
Enhancements to IBM i Performance Data
It’s been quite a while since I’ve written about the improved temporary storage tracking in the 7.2 release. Part 1 covered changes that provide improved tracking, part 2 covered changes made to help you better understand temporary storage consumption at a system level, and part 3 covered changes made to help you better understand temporary storage consumption at a job level. You may want to take a look at these posts if you have not done so already.(more…)
In the IBM i 7.2 release, there is a new function called “Batch Model”; the 7.2 announcement stated: “The Batch Model has been added, providing the ability to change environment variables, modeling how those changes would impact the batch window.” Batch Model is a utility that can help you understand your batch workloads and can assist in predicting the performance result of hardware changes (processors or disk) or an increasing workload on your batch window.(more…)