Monitor checks show gap
Article ID: 130029
Updated On:
Products
CA App Synthetic Monitor
Issue/Introduction
We noticed that on our monitor there is a large check gap between 00:58 – 03:00. The monitor is not in any maintenance mode nor was it turned off by anyone. What could have caused this gap in checks?
Environment
Release:
Component: WMAPP
Component: WMAPP
Resolution
While investigating the Monitor configuration, it was found that the Check Periods were set to start at 3:00 AM and end at 1:00 AM.
How ASM interprets this is the following:
Run the checks starting at 3:00 AM today and run until 1:00 AM the next morning. And then between 1:00 AM the next morning to 3:00 AM the next morning, no checks will be executed for this monitor.
So the monitor was working as it was configured to, which is why there was a gap in checks between 1:00 AM and 3:00 AM.
If you want to run checks 24/7, then the best way to configure the check time period is from 00:00 to 23:59. This way the checks run all the time without any gaps.
How ASM interprets this is the following:
Run the checks starting at 3:00 AM today and run until 1:00 AM the next morning. And then between 1:00 AM the next morning to 3:00 AM the next morning, no checks will be executed for this monitor.
So the monitor was working as it was configured to, which is why there was a gap in checks between 1:00 AM and 3:00 AM.
If you want to run checks 24/7, then the best way to configure the check time period is from 00:00 to 23:59. This way the checks run all the time without any gaps.
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