How To Fix RT826 - Performance attribute CPU: context switches

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 826

• Message text: Performance attribute CPU: context switches

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RT826 - Performance attribute CPU: context switches ?

  The SAP error message RT826, which refers to "Performance attribute CPU: context switches," indicates that there is a high number of context switches occurring in the SAP system. Context switches are the process of storing and restoring the state (context) of a CPU so that multiple processes can share a single CPU resource. A high number of context switches can lead to performance degradation, as it indicates that the system is spending a significant amount of time switching between processes rather than executing them.
  Causes:
  
  High Load on the System: A large number of users or processes running simultaneously can lead to increased context switching.
  Inefficient Code: Poorly optimized ABAP code or inefficient background jobs can lead to excessive context switching.
  Insufficient Hardware Resources: Limited CPU or memory resources can cause the operating system to frequently switch contexts to manage the load.
  Configuration Issues: Incorrect configuration of the SAP system or the underlying operating system can lead to performance issues.
  High Number of Dialog Processes: If there are too many dialog processes configured, it can lead to increased context switching.
  
  Solutions:
  
  Analyze Workload: Use transaction ST03N to analyze the workload and identify which processes are causing high context switching.
  Optimize ABAP Code: Review and optimize any custom ABAP programs or reports that may be causing excessive CPU usage.
  Adjust Configuration: Review the configuration of the SAP instance and the operating system. Ensure that the number of dialog processes is set appropriately for the workload.
  Increase Hardware Resources: If the system is consistently under heavy load, consider upgrading the hardware (CPU, memory) to better handle the workload.
  Monitor Background Jobs: Check for any long-running or inefficient background jobs that may be contributing to the issue and optimize them.
  Use Performance Monitoring Tools: Utilize SAP's performance monitoring tools (like ST06, ST02) to get insights into CPU usage, memory usage, and other performance metrics.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address performance issues related to context switching.
  SAP Community: Engage with the SAP Community for insights and shared experiences from other users who may have faced similar issues.
  Performance Tuning Guides: Refer to SAP's performance tuning guides for best practices on optimizing SAP systems.
  
  By addressing the underlying causes and implementing the suggested solutions, you can reduce the number of context switches and improve the overall performance of your SAP system.