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Exec driver is showing cache+RSS in memory usage UI view #15830
Comments
Hi @Blefish, can you post the detected cgroup version? e.g.
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Hi, it seems like v1 is currently being detected. Could that be the reason?
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Hi @Blefish 👋 Would you also be able to provide the output of the I think the UI uses the RSS value as fallback, so I want to make sure your API result is non-zero. Also, is the Nomad agent running as Thanks! |
Nomad version
Nomad v1.4.3 (f464aca)
Operating system and Environment details
Amazon Linux 2
Issue
Nomad exec driver seems to be reporting cache+RSS in UI view, causing confusion among operators that memory usage of the application is too high.
Reproduction steps
Launch an exec driver job that uses an external volume and reads a large file
Expected Result
Nomad's memory usage UI view should indicate memory used by the process as seems to be the case with docker driver.
Actual Result
Nomad's memory usage UI shows cache+RSS.
UI allocation view
![Screenshot from 2023-01-20 09-07-12](https://user-images.githubusercontent.com/1191779/213637598-98e2b191-bd03-4467-b21d-eac946df13eb.png)
nomad alloc stats
![Screenshot from 2023-01-20 09-07-35](https://user-images.githubusercontent.com/1191779/213637607-077a58db-70fc-47ce-9443-199e421f240d.png)
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