[
https://ovirt-jira.atlassian.net/browse/OVIRT-2782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Belenky updated OVIRT-2782:
----------------------------------
Description:
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:
```
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 `hudson.slaves.NodeProvisioner.initialDelay` to `0`. But, because
Jenkins computes the excess workload value (which decides if we need to
allocate a new node) using an EMA, we also can lower its threshold so that
Jenkins will allocate nodes faster and in advance.
{code:java}
-Dhudson.slaves.NodeProvisioner.initialDelay=0
-Dhudson.slaves.NodeProvisioner.MARGIN=50
-Dhudson.slaves.NodeProvisioner.MARGIN0=0.85
{code}
was:
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}
But, because Jenkins computes the excess workload value (which decides if we
need to allocate a new node) using an EMA, we also can control it's margins to
lower 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:
```
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 `hudson.slaves.NodeProvisioner.initialDelay` to `0`. But, because
Jenkins computes the excess workload value (which decides if we need to
allocate a new node) using an EMA, we also can lower its threshold so that
Jenkins will allocate nodes faster and in advance.
{code:java}
-Dhudson.slaves.NodeProvisioner.initialDelay=0
-Dhudson.slaves.NodeProvisioner.MARGIN=50
-Dhudson.slaves.NodeProvisioner.MARGIN0=0.85
{code}
> 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: infra
>
> 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:
> ```
> 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 `hudson.slaves.NodeProvisioner.initialDelay` to `0`. But,
> because Jenkins computes the excess workload value (which decides if we need
> to allocate a new node) using an EMA, we also can lower its threshold so that
> Jenkins will allocate nodes faster and in advance.
> {code:java}
> -Dhudson.slaves.NodeProvisioner.initialDelay=0
> -Dhudson.slaves.NodeProvisioner.MARGIN=50
> -Dhudson.slaves.NodeProvisioner.MARGIN0=0.85
> {code}
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