How To Fix VIRT143 - CPU Time Used by Hypervisor

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 143

• Message text: CPU Time Used by Hypervisor

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 VIRT143 - CPU Time Used by Hypervisor ?

  The SAP error message VIRT143, which indicates "CPU Time Used by Hypervisor," typically relates to performance issues in a virtualized environment where SAP applications are running. This error suggests that the CPU resources allocated to the virtual machine (VM) are being heavily utilized by the hypervisor, which can lead to performance degradation for the SAP application.
  Causes:
  
  
  High CPU Utilization: The hypervisor is consuming a significant amount of CPU resources, which can occur due to:
  
  Over-provisioning of VMs on the host.
  Resource contention among multiple VMs.
  Inefficient VM configurations or workloads.
  
  
  
  Configuration Issues: Incorrect settings in the hypervisor or VM configuration can lead to suboptimal performance.
  
  
  Resource Limits: The VM may have CPU limits set that restrict its ability to utilize available resources effectively.
  
  
  Background Processes: Other processes running on the host machine may be consuming CPU resources, impacting the performance of the SAP application.
  
  
  Hypervisor Overhead: The overhead introduced by the hypervisor itself can lead to increased CPU time usage.
  
  
  Solutions:
  
  
  Monitor Resource Usage: Use monitoring tools to analyze CPU usage on both the hypervisor and the VM level. Identify any processes that are consuming excessive resources.
  
  
  Optimize VM Configuration:
  
  Ensure that the VM is allocated sufficient CPU and memory resources based on the workload requirements.
  Adjust the number of virtual CPUs (vCPUs) assigned to the VM to match the workload.
  
  
  
  Reduce Over-Provisioning: If multiple VMs are running on the same host, consider reducing the number of VMs or redistributing workloads to balance resource usage.
  
  
  Adjust Resource Limits: Check and modify any resource limits set on the VM to allow it to utilize more CPU resources if necessary.
  
  
  Hypervisor Settings: Review and optimize hypervisor settings to reduce overhead and improve performance. This may include adjusting scheduling policies or enabling features that enhance performance.
  
  
  Upgrade Hardware: If the host machine is consistently under heavy load, consider upgrading the hardware (CPU, memory) to provide more resources.
  
  
  Review Background Processes: Identify and manage any non-essential processes running on the host that may be consuming CPU resources.
  
  
  Consult Documentation: Refer to the documentation for your specific hypervisor (e.g., VMware, Hyper-V, etc.) for best practices and performance tuning guidelines.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to performance issues in virtualized environments.
  Performance Monitoring Tools: Utilize tools like SAP Solution Manager, or third-party monitoring solutions to gain insights into system performance.
  Hypervisor Documentation: Review the documentation for your hypervisor for specific configurations and performance tuning options.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the impact of the VIRT143 error and improve the performance of your SAP applications running in a virtualized environment.