How To Fix CSM_VMC106 - CPU Usage of All Recorded Shared GCs

SAP Error Message - Details

• Message type: E = Error

• Message class: CSM_VMC - Messages for VM Container Monitoring

• Message number: 106

• Message text: CPU Usage of All Recorded Shared GCs

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CSM_VMC106 - CPU Usage of All Recorded Shared GCs ?

  The SAP error message CSM_VMC106, which indicates "CPU Usage of All Recorded Shared GCs," typically relates to performance issues in the SAP system, particularly concerning the Garbage Collection (GC) process in the Java Virtual Machine (JVM). This error suggests that the CPU usage related to the shared garbage collectors is higher than expected, which can lead to performance degradation.
  Causes:
  
  High Object Creation Rate: If your application is creating a large number of objects, it can lead to frequent garbage collection cycles, which can consume significant CPU resources.
  Inefficient Memory Management: Poorly managed memory, such as memory leaks or excessive retention of objects, can lead to increased GC activity.
  Configuration Issues: Incorrect JVM parameters or GC settings can lead to inefficient garbage collection processes.
  Application Design: Certain design patterns or coding practices may lead to excessive object creation or retention, impacting GC performance.
  Insufficient Resources: The underlying hardware may not have sufficient CPU or memory resources to handle the workload effectively.
  
  Solutions:
  
  Analyze and Optimize Code: Review the application code for areas where object creation can be minimized. Use profiling tools to identify hotspots and optimize them.
  Tune JVM Parameters: Adjust the JVM parameters related to garbage collection. This may include settings for heap size, GC algorithms, and other related parameters. Common parameters to consider include:
  
  -Xms and -Xmx for setting initial and maximum heap size.
  -XX:+UseG1GC or other GC algorithms based on your application needs.
  
  
  Monitor and Analyze GC Logs: Enable and analyze garbage collection logs to understand the frequency and duration of GC events. This can help identify patterns and areas for improvement.
  Increase System Resources: If the application is consistently hitting resource limits, consider upgrading the hardware (CPU, memory) to better accommodate the workload.
  Use Caching: Implement caching strategies to reduce the need for frequent object creation and improve performance.
  Review Application Architecture: Consider architectural changes that can reduce the load on the garbage collector, such as using more efficient data structures or reducing the scope of object lifetimes.
  
  Related Information:
  
  Monitoring Tools: Use SAP's monitoring tools (like SAP Solution Manager) or third-party APM tools to monitor JVM performance and GC activity.
  Documentation: Refer to SAP's official documentation and notes related to JVM tuning and performance optimization for specific recommendations tailored to your version of SAP.
  Community and Support: Engage with the SAP community or reach out to SAP support for insights and best practices from other users who may have faced similar issues.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the impact of the CSM_VMC106 error and improve the overall performance of your SAP system.