mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-21 07:59:51 +00:00
63 lines
1.7 KiB
Markdown
63 lines
1.7 KiB
Markdown
|
# CPU Manager Example
|
||
|
|
|
||
|
|
This example flow uses a pre-built docker image based on
|
||
|
|
[cpuset-visualizer](https://github.com/ConnorDoyle/cpuset-visualizer).
|
||
|
|
Each container run here hosts an endpoint serving an up-to-the-second
|
||
|
|
system representation generated by
|
||
|
|
[`lstopo`](https://www.open-mpi.org/projects/hwloc).
|
||
|
|
|
||
|
|
## Setup
|
||
|
|
|
||
|
|
1. Start a local cluster with the static CPU manager policy enabled :
|
||
|
|
|
||
|
|
```
|
||
|
|
sudo PATH=$PATH \
|
||
|
|
KUBELET_FLAGS="\
|
||
|
|
--feature-gates=CPUManager=true \
|
||
|
|
--cpu-manager-policy=static \
|
||
|
|
--cpu-manager-reconcile-period=5s \
|
||
|
|
--kube-reserved=cpu=500m" \
|
||
|
|
./hack/local-up-cluster.sh
|
||
|
|
```
|
||
|
|
|
||
|
|
## Run pods
|
||
|
|
|
||
|
|
The example pods are in the `/examples/cpu-manager` directory of the
|
||
|
|
Kubernetes source tree. Your ability to run all of the example pods
|
||
|
|
simultaneously depends on how many CPUs are available on the test system.
|
||
|
|
|
||
|
|
The required CPUs for each example pod are listed below:
|
||
|
|
|
||
|
|
```
|
||
|
|
POD | CPUs
|
||
|
|
------------------|---------
|
||
|
|
be.yaml | >= 1 CPU
|
||
|
|
shared.yaml | >= 1 CPU
|
||
|
|
exclusive-1.yaml | >= 2 CPU
|
||
|
|
exclusive-2.yaml | >= 3 CPU
|
||
|
|
exclusive-3.yaml | >= 4 CPU
|
||
|
|
exclusive-4.yaml | >= 5 CPU
|
||
|
|
```
|
||
|
|
|
||
|
|
### Example
|
||
|
|
|
||
|
|
Run a pod with a single container in the shared pool, and another pod
|
||
|
|
with a single container in an exclusive cpuset with one CPU.
|
||
|
|
|
||
|
|
```
|
||
|
|
$ kubectl create -f examples/cpu-manager/shared.yaml
|
||
|
|
$ kubectl create -f examples/cpu-manager/exclusive-1.yaml
|
||
|
|
```
|
||
|
|
|
||
|
|
To list IP addresses of the pods running in the local cluster, do:
|
||
|
|
|
||
|
|
```
|
||
|
|
$ watch ./examples/cpu-manager/pod-ips
|
||
|
|
exclusive-1 http://172.17.0.4
|
||
|
|
shared http://172.17.0.3
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Sample cpuset-visualizer output
|
||
|
|
|
||
|
|
|