Power On And Power Off Problems - Lenovo ThinkSystem SR665 V3 User Manual

Network performance
Complete the following steps until the problem is solved:
1. Isolate which network is operating slowly (such as storage, data, and management). You might find it
helpful to use ping tools or operating-system tools such as ethtool, task manager, or resource manager.
2. Check for traffic congestion on the network.
3. Utilize flow control settings to avoid overloading a port.
4. Update the NIC device driver, or the storage device controller device driver.
5. Use any traffic-diagnostic tools provided by the adapter manufacturer.
6. Balance the workload across multiple processor cores by using functions such as Receive Side Scaling
(RSS).
7. Limit the inter-processor communication by using parameters such as interrupt affinity and NUMA
settings.
8. Follow the instructions of adapter-specific tuning guides provided by the adapter manufacturer.
Operating system performance
Complete the following steps until the problem is solved:
1. If you have recently made changes to the server (for example, updated device drivers or installed
software applications), remove the changes.
2. Check for any networking issues.
3. Check the operating system logs for performance related errors.
4. Check for events related to high temperatures and power issues as the server might be throttled to help
with cooling. If it is throttled, reduce the workload on the server to help improve performance.
5. 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.
6. Ensure that the workload is not too high for the configuration.

Power on and power off problems

Use this information to resolve issues when powering on or powering off the server.
• "The power button does not work (server does not start)" on page 509
• "Server does not power on" on page 510
• "Server does not power off" on page 510
The power button does not work (server does not start)
Note: The power button will not function until approximately 1 to 3 minutes after the server has been
connected to ac power to allow time for BMC to initialize.
Complete the following steps until the problem is resolved:
1. Make sure that the power button on the server is working correctly:
a. Disconnect the server power cords.
b. Reconnect the server power cords.
c. Reseat the front operator panel cable, and then repeat steps 1a and 1b.
• If the server starts, reseat the front operator panel.
• If the problem remains, replace the front operator panel.
2. Make sure that:
.
Chapter 8 Problem determination
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