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IMS Support for z/OS Workload Interaction Correlator

By Sanjay Kaliyur posted Tue December 15, 2020 07:08 PM


Have you ever experienced performance hiccups with your workload components? Do you have a hard time knowing where to start to diagnose these problems?

We know that investigating complicated workloads can be very stressful and often requires skills in various areas of Z. When a performance anomaly is detected, it can be difficult to determine if the issue is coming from z/OS or from a middleware solution. The standard method for diagnosing these issues is to perform very intricate, detailed middleware silo analysis, and determine which middleware product is causing the performance anomaly. This can be incredibly tedious and often won’t get your workloads running at full capacity within a reasonable timeframe.

What if there was an easy way to immediately tell which component of your workload was causing the performance degradation? Imagine the time and money you would save by not having to perform intricate middleware silo analysis on your own!
z/OS Workload Interaction Correlator
With the recent announcement of z/OS Workload Interaction Correlator, IBM is delivering a revolutionary offering to improve your workload resilience. z/OS Workload Interaction Correlator offers a synchronized approach to data generation that allows for the ability to dynamically define and correlate disparate client-specific performance anomalies without a predefined policy. This correlation will allow our clients to quickly identify the workload components responsible for their performance anomaly. 
z/OS Workload Interaction Correlator works by collecting key performance indicators from all workload subsystems at a high frequency. With this collected information, you can get a very clear picture of which system is performing sub-optimally and when this non-standard performance began. Armed with this information, you can gather some additional insight into how to prevent any performance issues from reoccurring and resulting in potentially costly outages.

IMS Support for z/OS Workload Interaction Correlator
We are proud to announce IMS support for z/OS Workload Interaction Correlator. We have been actively working on this feature with the z/OS team as well as the other subsystems and are thrilled to be able to offer this amazing technology with valuable data from IMS to determine performance anomalies. 
With IMS V15 APAR PH15062, IMS records statistics like number of transactions processed, CPU time, and elapsed transaction time for MPP and JMP regions.  SMF then logs type 98 records with subtype 1025 to record these statistics. Tools such as the z/OS Workload Interaction Navigator can be then used to generate graphical displays of the data.
By being one of the first middleware exploiters of this technology, IMS continues to demonstrate our commitment to provide forward-thinking and intuitive solutions for our clients. z/OS Workload Interaction Correlator provides a means for our clients to diagnose performance anomalies without specific IMS or z/OS skills, thus making it accessible to anyone of any experience level to use. We truly feel that this new technology is revolutionary for reimagining workload management.

How you can get it
IBM z/OS Workload Interaction Correlator is a priced feature of IBM z/OS. It requires IBM z14 or z15 hardware and support will be in the PTF for APAR OA57165 for IBM z/OS V2.3 and V2.4.
IMS support for z/OS Workload Interaction Correlator can be found in APAR PH15062.
The IMS team first mentioned our support for z/OS Workload Interaction Correlator in the IMS V15.2 announcement letter.
You can read the announcement for z/OS Workload Interaction Correlator here and get more details about the offering here.

For more information, be sure to check out the Knowledge Center. Also, don’t forget to check out our IMS Community page as well as subscribe to the eNews for the latest updates from the IMS team, such as this blog! For introduction videos on IMS, check out the Intro to IMS series. We are also constantly creating new educational content based on our clients’ needs. This content can be assessed from the IMS MediaCenter Channel.