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A backup agent is causing high CPU utilization. The publisher of the software has found that a WMI call produces the high CPU utilization and used wbemtest to show me the problem.
This is happening on 3 Dell R640 with Xeon Gold 5118 CPU. They are all Hyper-V hosts.
Here is how to the problem is demonstrated.
1. Run wbemtest and have task manager showing CPU utilization.
2 Use "Connect" to connect to root\wmi
3. Use "Execute Method" and set the object path to: bcdstore.filepath=""
4. Set the "Method Type" to "Enumerate Objects"
5. Click "Edit In" parameters. In the parameters window double click "type" and set it to 0x10200003.
6. Save property
7. Save object.
8. Click "Execute".
The CPU will jump anywhere from 5% to 95% for about 1 second. On normal servers you won't see jump on CPU.
Any suggestions on how to address this?
Continue reading...
This is happening on 3 Dell R640 with Xeon Gold 5118 CPU. They are all Hyper-V hosts.
Here is how to the problem is demonstrated.
1. Run wbemtest and have task manager showing CPU utilization.
2 Use "Connect" to connect to root\wmi
3. Use "Execute Method" and set the object path to: bcdstore.filepath=""
4. Set the "Method Type" to "Enumerate Objects"
5. Click "Edit In" parameters. In the parameters window double click "type" and set it to 0x10200003.
6. Save property
7. Save object.
8. Click "Execute".
The CPU will jump anywhere from 5% to 95% for about 1 second. On normal servers you won't see jump on CPU.
Any suggestions on how to address this?
Continue reading...