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https://issues.apache.org/jira/browse/BEAM-4122?focusedWorklogId=92250&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-92250
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ASF GitHub Bot logged work on BEAM-4122:
----------------------------------------
Author: ASF GitHub Bot
Created on: 18/Apr/18 21:36
Start Date: 18/Apr/18 21:36
Worklog Time Spent: 10m
Work Description: swegner commented on issue #5171: [BEAM-4122] Tune
Gradle resource usage on Jenkins
URL: https://github.com/apache/beam/pull/5171#issuecomment-382537395
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Issue Time Tracking
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Worklog Id: (was: 92250)
Time Spent: 1h (was: 50m)
> Tune Gradle resource usage on Jenkins
> -------------------------------------
>
> Key: BEAM-4122
> URL: https://issues.apache.org/jira/browse/BEAM-4122
> Project: Beam
> Issue Type: Sub-task
> Components: build-system
> Reporter: Scott Wegner
> Assignee: Scott Wegner
> Priority: Major
> Time Spent: 1h
> Remaining Estimate: 0h
>
> The new Gradle build seems to be exhausting memory on the Jenkins machines,
> causing them to lose their connection and die. This has made our tests
> extremely flaky.
> We need to tune the Gradle build such that it does not exhaust Jenkins
> machine resources.
> A [Gradle build
> scan|https://scans.gradle.com/s/ehue5xqj36zeo/infrastructure] shows some
> information about the Jenkins VM:
> * Operating system Linux 3.19.0-79-generic
> * CPU cores 4 cores
> * Max Gradle workers 4 workers
> * Java runtime Oracle Java(TM) SE Runtime Environment 1.8.0_152-b16
> * Java VM Oracle Java HotSpot(TM) 64-Bit Server VM 25.152-b16 (mixed mode)
> * Max JVM memory heap size 3506 MB
> From the [Jenkins Load
> Statistics|https://builds.apache.org/computer/beam3/load-statistics] page, it
> appears that each machine has 2 executors.
> Some resources for tuning memory:
> * [https://wiki.jenkins.io/display/JENKINS/I%27m+getting+OutOfMemoryError]
> * [https://guides.gradle.org/performance/]
> *
> [https://docs.gradle.org/current/userguide/build_environment.html#sec:configuring_jvm_memory]
>
> *
> [https://docs.gradle.org/current/userguide/command_line_interface.html#sec:command_line_performance]
>
>
> We may also be able to improve performance by using Gradle features to remove
> redundant work:
> * [Build Cache|https://docs.gradle.org/current/userguide/build_cache.html]:
> re-use up-to-date outputs from previous builds
> * [Gradle
> Daemon|https://docs.gradle.org/current/userguide/gradle_daemon.html]: re-use
> worker process and cache output status
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