PTF# LU15610
We are pleased to announce the inclusion of Anomalous Usage Alerts in the DCI package.
A significant performance issue is often associated with a noticeable usage spike as the Mainframe does its best to maintain service. Anomalous usage spikes can be an early indicator of a building problem. DCI Anomalous usage alerts will highlight an unusual usage spike within 5 minutes of the event so that it can be assessed and remedial action taken in good time, where appropriate. Given the stable nature of production workloads this alert is only likely to trigger when there is an issue that is genuinely worthy of attention.
How does it work
DCI will check the Act MSU and R4HA usage of each LPAR every 5 minutes against a baseline. It will generate the alert if it sees a statistically significant deviation in usage. Production consumption is very predictable as long as we are comparing like with like. To do this, DCI is comparing this 5 minute interval with the baseline derived from the same 5 minute interval for the same day for the last 10 instances, in other words, over the last two and a half months.
For example, if it is now 10:55 am on Thursday, DCI will take the current reading for the 10:50 to 10:55 usage and compare it with a baseline of the last ten instances of 10:50 to 10:55 on Thursday. DCI will also ignore any day marked as non-business day to ensure consistency of the baseline.
If the Act MSU value is two standard deviations from normal DCI will alert. If the R4HA value, which is by its nature more stable, is one standard deviation from normal DCI will alert. This alert will begin to be available when 8 instances of the capacity metric for the 5 minute period are available in the MSU DB, in other words the alerts will be immediately available for any DCI environment that has been monitoring that LPAR for more than 2 months.
Minimum configuration
This alert type is automatically enabled for any LPAR where a DCI ActMSU or Def Cap alert is already configured. To enable this alert on any LPAR, add a DCI MSU or Def Cap alert from the Alerts panel. The anomalous usage alert will trigger on an LPAR regardless of any other alert threshold being met or not. The output of these alerts is a WTO so that it can be caught and further processed by automation tools. The alert is also passed directly to WatchTower Alert Insights.
Further information
The feature documentation can be found at: https://techdocs.broadcom.com/us/en/ca-mainframe-software/intelligent-operations/ca-dynamic-capacity-intelligence/2-0/release-notes/new-features.html
------------------------------
Hugo Banks
Product Owner
Mainframe Application Tuner | Dynamic Capacity Intelligence
hugo.banks@broadcom.com | broadcom.com
------------------------------