CGroups CPU exceeded notification: 72 % during 5 minute(s) while CPU usage limit for subscription is set to 50%

Created:

2017-03-21 10:31:18 UTC

Modified:

2017-08-08 13:21:00 UTC

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CGroups CPU exceeded notification: 72 % during 5 minute(s) while CPU usage limit for subscription is set to 50%

Symptoms

User receives email notification regarding CPU usage:

    The resource usage limit was reached by the subscription example.com at 16:37. 
    CPU usage: 72 % during 5 minute(s)

    Information: 
    CPU usage notification limit is: 49 % per 5 minute(s) 
    Hard CPU usage limit is: 50 % per 5 minute(s)
  • Subscription is locked

  • CPU limit is shown set to 50% in Plesk > Subscriptions > example.com > Customize > RAM, CPU, Disk I/O

  • CPU limit is set to 1844674407370955% (unlimited) in the file /etc/systemd/system/<user-id>.slice.d/50-CPUQuota.conf:

    # cat  /etc/systemd/system/<user-id>.slice.d/50-CPUQuota.conf
    [Slice]
    CPUQuota=1844674407370955%
    

Cause

CGroups is misconfigured, or the configuration file was manually updated

Resolution

Set CPU limit again via tab Plesk > Subscriptions > example.com > Customize > RAM, CPU, Disk I/O > OK

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