cdm probe does not seem to be sending alarm on memory usage

Document ID : KB000009140
Last Modified Date : 14/02/2018
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Issue:
  • I have configured the cdm probe to send an alarm when memory usage exceeds 90% but when stress testing the server no alarm is sent even though memory usage is 97%
Cause:
  • When configuring cdm via Infrastructure Manager there are 3 categories for memory monitoring
    • M: allows you to specify the threshold values for total memory usage.
    • S: allows you to specify the threshold values for swap memory usage.
    • P: allows you to specify the threshold values for physical memory usage.
  • These are selected by the buttons on the memory chart
  • The probe was configured to monitor total memory usage (M) which monitors pagefile rather than Physical memory usage (P)
  • Whilst physical memory usage was 97% the total memory usage was only 85%
Resolution:
  • Configure the alarm thresholds on physical memory usage
  • see here for documentation on how to do this