High CPU load by IIS process

Created:

2016-11-16 13:16:48 UTC

Modified:

2017-04-24 11:40:44 UTC

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High CPU load by IIS process

Applicable to:

  • Plesk 10.4 for Windows
  • Plesk Onyx for Windows
  • Plesk 11.5 for Windows
  • Plesk 12.0 for Windows

Symptoms

High load on the server. The operations hang or it takes too long to execute.

Resolution

Identify the exact domain causing high CPU load: open IIS > server_name > IIS > Worker Processes. Depending on the result, apply one of the following:

  1. If the issue is caused by application pool exclusively used by Plesk, please, contact Parallels Technical Support, as additional investigation is required.

  2. If the issue is caused by application pool of a client's website, the case falls out of Parallels Technical support scope . It is recommended to contact system administrator regarding the issue.

Workaround

Limit CPU usage for application pool of the domain, following instructions from the article .

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