Article ID: 113005, created on Dec 15, 2011, last review on Aug 12, 2014

  • Applies to:
  • Plesk 9.5 for Linux/Unix


Seemingly inaccurate CPU usage statistics are displayed in Home > Modules > Watchdog > Resources Usage Statistics.


The issue is caused by an outdated binary monit that is using an incorrect algorithm for CPU utilization calculation. It tries to use an aggregate number for all CPUs with a result ranging from 0% to N*100% where N is the number of cores. The result is very inaccurate and can differ from "top" by a factor of 2. Additionally, it ignores "nice" processes completely.


Copy the attached file to /usr/local/psa/admin/bin/modules/watchdog/monit, backing up the original binary.


60d3e722783ac7177a2b4b4c13af4062 a914db3fdc7a53ddcfd1b2db8f5a1b9c 29d1e90fd304f01e6420fbe60f66f838 6ef0db7f1685482449634a455d77d3f4 56797cefb1efc9130f7c48a7d1db0f0c

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