Performance problems
Use this information to solve performance problems.
Poor or slow network performance
Complete the following steps until the problem is solved:
- Isolate which network (such as storage, data, and management) is operating slowly. You might find it helpful to use ping tools or operating-system tools such as a task manager or resource manager.
- Check for traffic congestion on the network.
- Update the NIC device driver or the storage device controller device driver.
- Use the traffic-diagnostic tools that are provided by the I/O-module manufacturer.
Operating-system performance
Complete the following steps until the problem is solved:
- If you have recently made changes to the compute node (for example, updated device drivers or installed software applications), remove the changes.
- Check for any networking issues.
- Check the operating-system logs for performance-related errors.
- Check for events related to high temperatures and power issues; as the compute node might be throttled to help with cooling. If it is throttled, reduce the workload on the compute node to help improve performance.
- Check for events related to disabled DIMMs. If you do not have enough memory for the application workload, your operating system will have poor performance.
- Make sure that the workload is not too high for the configuration.
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