Balazs Gibizer gibizer

Chapter 3. Configuring Compute nodes for performance

# (gibi): this chapter is good as is

# (gibi): mostly good. But the 3rd bullet point needs a reword as we don't have overcloud any more. I think we can even drop the 3rd bullet point

Designate Compute nodes for CPU pinning.
Configure the Compute nodes to reserve host cores for pinned instance vCPU processes, floating instance vCPU processes, and host processes.

This is only needed in a clean hypervisor. If you have a laptop with a user with sudo then you can skip the user creation and sudo setup. As root:

useradd -s /bin/bash -d /home/gibi -m gibi
echo "gibi ALL=(ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/gibi
sudo -u gibi -i

	import functools
	import random
	import time

	import eventlet
	from oslo_concurrency import lockutils

	eventlet.monkey_patch()

	LOCK = "my-lock"

	// How to default a struct field?

	// Example code: https://github.com/gibizer/simple-operator-example/commit/08fb63dda8aae4c20272b8e87d680228948e8ff6

	// terminal #1
	[fedora@gibi-f35 simple-operator-example]$ make run
	test -s /home/fedora/op-build/simple-operator-example/bin/controller-gen \|\| GOBIN=/home/fedora/op-build/simple-operator-example/bin go install sigs.k8s.io/controller-tools/cmd/controller-gen@v0.9.2
	/home/fedora/op-build/simple-operator-example/bin/controller-gen rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases
	/home/fedora/op-build/simple-operator-example/bin/controller-gen object:headerFile="hack/boilerplate.go.txt" paths="./..."
	go fmt ./...

	import threading
	import time


	def some_work():
	time.sleep(1)
	print("a bit of work done")


	def task(timeout: threading.Event):