How To Fix RT055 - CPU: Average number of waiting processes

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 055

• Message text: CPU: Average number of waiting processes

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT055 - CPU: Average number of waiting processes ?

  The SAP error message RT055, which indicates "CPU: Average number of waiting processes," is related to performance issues in the SAP system. This message typically arises when the system is experiencing high load or contention for CPU resources, leading to an increased number of processes waiting for CPU time.
  Cause:
  
  High Workload: A sudden increase in user activity or background jobs can lead to CPU saturation.
  Inefficient Code: Poorly optimized ABAP code or inefficient database queries can consume excessive CPU resources.
  Insufficient Hardware Resources: The underlying hardware may not be adequate to handle the current workload.
  Configuration Issues: Incorrect configuration of the SAP system or the underlying operating system can lead to performance bottlenecks.
  Background Jobs: A large number of background jobs running simultaneously can also contribute to CPU contention.
  
  Solution:
  
  Analyze Workload: Use transaction codes like ST03N (Workload Analysis) to analyze the workload and identify the processes consuming the most CPU.
  Optimize Code: Review and optimize any custom ABAP programs or reports that may be causing high CPU usage.
  Adjust Background Jobs: Stagger the execution of background jobs to reduce peak load on the CPU.
  Increase Hardware Resources: If the system consistently experiences high CPU usage, consider upgrading the hardware (CPU, RAM) or scaling out to additional application servers.
  Tune System Parameters: Review and adjust SAP kernel parameters and operating system settings to optimize performance.
  Monitor System Performance: Regularly monitor system performance using tools like SAP Solution Manager or other monitoring tools to proactively identify and address performance issues.
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may provide specific guidance or patches related to performance issues.
  Transaction Codes: Familiarize yourself with transaction codes such as ST06 (Operating System Monitor), ST02 (Tune Summary), and SM50 (Process Overview) for real-time monitoring and analysis.
  Performance Tuning Guides: Refer to SAP's performance tuning guides for best practices on optimizing SAP systems.
  SAP Community: Engage with the SAP Community for insights and shared experiences from other users facing similar issues.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the RT055 error and improve the overall performance of your SAP system.