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docs(README): hint of CPU limit lower than 1000m
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This commit is contained in:
Markus Pesch 2025-02-15 18:06:24 +01:00
parent 80c8ff0d3b
commit 74ef3835f4
Signed by: volker.raschek
GPG Key ID: 852BCC170D81A982
1 changed files with 4 additions and 2 deletions
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README.md
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@ -71,7 +71,7 @@ cannot use the available CPU time to perform computing operations.
The application must be informed that despite several CPUs only a part (limit) of the available computing time is
available. As this is a Golang application, this can be implemented using `GOMAXPROCS`. The following example is one way
of defining `GOMAXPROCS` automatically based on the defined CPU limit like `100m`. Please keep in mind, that the CFS
of defining `GOMAXPROCS` automatically based on the defined CPU limit like `1000m`. Please keep in mind, that the CFS
rate of `100ms` - default on each kubernetes node, is also very important to avoid CPU throttling.
Further information about this topic can be found [here](https://kanishk.io/posts/cpu-throttling-in-containerized-go-apps/).
@ -79,6 +79,8 @@ Further information about this topic can be found [here](https://kanishk.io/post
> [!NOTE]
> The environment variable `GOMAXPROCS` is set automatically, when a CPU limit is defined. An explicit configuration is
> not anymore required.
>
> Please take care the a CPU limit < `1000m` can also lead to CPU throttling. Please read the linked documentation carefully.
```bash
helm install prometheus-postgres-exporter prometheus-exporters/prometheus-postgres-exporter \
@ -89,7 +91,7 @@ helm install prometheus-postgres-exporter prometheus-exporters/prometheus-postgr
--set 'prometheus.metrics.serviceMonitor.enabled=true' \
--set 'deployment.postgresExporter.env.name=GOMAXPROCS' \
--set 'deployment.postgresExporter.env.valueFrom.resourceFieldRef.resource=limits.cpu' \
--set 'deployment.postgresExporter.resources.limits.cpu=100m'
--set 'deployment.postgresExporter.resources.limits.cpu=1000m'
```
#### TLS authentication and encryption