[JIRA] (OVIRT-2782) Configure Jenkins to wait less and allocate more

Configure Jenkins to wait less and allocate more ------------------------------------------------ Key: OVIRT-2782 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-2782 Project: oVirt - virtualization made easy Issue Type: Improvement Reporter: Daniel Belenky Assignee: Evgheni Dereveanchin By default, Jenkins is configured to wait a few seconds before allocating a new node in a hope that a node in use to be freed. We can control this setting by setting {code:java} hudson.slaves.NodeProvisioner.initialDelay=0 {code} We can also control the excessive workload threshold and force Jenkins to allocate slaves for jobs in the queue... but, because Jenkins computes the excess workload value (which decides if we need to allocate a new node) using an EMA, we set it's margins to higher values and it effectively lowers its threshold so that Jenkins will allocate nodes faster and in advance. The recommended settings by the k8s plugin to spawn a node for every build in the queue: {code:java} -Dhudson.slaves.NodeProvisioner.initialDelay=0 -Dhudson.slaves.NodeProvisioner.MARGIN=50 -Dhudson.slaves.NodeProvisioner.MARGIN0=0.85 {code}