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Change By:
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Steve West
(03/Feb/15 12:47 AM)
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Description:
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Performance of the delivery pipeline view degrades significantly when using a high number (100+) of folders and projects. A single user request will cause the Jenkins java process to tie up a full CPU. A thread dump during this situation shows usually all threads idle except those with stacks similar to the snippet below.
Example thread stack:
{code}
at java.util.Collections$UnmodifiableCollection$1.hasNext(Collections.java:1066)
at com.cloudbees.hudson.plugins.folder.Folder.getItems(Folder.java:503)
at se.diabol.jenkins.pipeline.util.ProjectUtil.find(ProjectUtil.java:108)
at se.diabol.jenkins.pipeline.util.ProjectUtil.find(ProjectUtil.java:110)
at se.diabol.jenkins.pipeline.util.ProjectUtil.getProject(ProjectUtil.java:88)
at se.diabol.jenkins.pipeline.util.BuildUtil.getUpstreamBuild(BuildUtil.java:40)
at se.diabol.jenkins.pipeline.util.BuildUtil.getFirstUpstreamBuild(BuildUtil.java:65)
at se.diabol.jenkins.pipeline.util.BuildUtil.match(BuildUtil.java:83)
at se.diabol.jenkins.pipeline.domain.Task.getLatestTask(Task.java:142)
at se.diabol.jenkins.pipeline.domain.Stage.createLatestStage(Stage.java:188)
at se.diabol.jenkins.pipeline.domain.Pipeline.createPipelineLatest(Pipeline.java:149)
at se.diabol.jenkins.pipeline.DeliveryPipelineView.getComponent(DeliveryPipelineView.java:328)
at se.diabol.jenkins.pipeline.DeliveryPipelineView.getPipelines(DeliveryPipelineView.java:293)
{code}
I have created [pull request 94|https://github.com/Diabol/delivery-pipeline-plugin/pull/94] to address this. This has been verified in a production Jenkins environment. Also, CPU load has been shown to be significantly reduced.
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Updated description to reference pull request that fixes the problem.