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che-server/dockerfiles
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Sergii Kabashniuk 026598d841
Optimize che-server ram usage on Docker (#7787) 
Optimize che-server ram usage on Docker 
Proposal is to set container limit to 750M for both Docker and OpenShift and tune a bit GC

-XX:MaxRAMFraction=2 -XX:+UseParallelGC -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=20 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap -Dsun.zip.disableMemoryMapping=true -Xms20m
Important parts

-XX:MaxRAMFraction=2 -XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap - tels jvm to use ~ CHE_MASTER_CONTAINER_RAM/MaxRAMFraction for heap
We need some space for off-heap activity. During test I saw VmRSS of jvm ~330_000k - 350_000k.
-XX:+UseParallelGC -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=20 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 ask GC to keep heap compact in cost of some CPU.
You can see changes in heap usage pattern in images below.
 		2017-12-08 18:53:27 +02:00
..
action Changed copyright owner to "Red Hat, Inc." in license headers (#5964) 2017-08-11 10:46:58 +03:00
base Do not pull all CHE images on CLI init if --skip:pull OR --fast specified (#7417) 2017-11-17 16:17:40 +02:00
bats Customize image names during image build (#4336) 2017-03-10 13:41:45 +01:00
che Update open-jdk-source-file-location 2017-11-21 18:47:08 +01:00
cli merge with master (#7712) 2017-12-04 16:36:17 +02:00
dev Che in che improvements (#7633) 2017-11-29 18:15:21 +02:00
dir Changed copyright owner to "Red Hat, Inc." in license headers (#5964) 2017-08-11 10:46:58 +03:00
init Optimize che-server ram usage on Docker (#7787) 2017-12-08 18:53:27 +02:00
ip Adds a check for linuxkit in addition to moby to detect if we're running docker4mac or docker4windows (else it will flag it as being 'native') 2017-11-13 10:39:27 +01:00
lib RELEASE: set next dev version (#7523) 2017-11-23 12:50:56 +02:00
mount Changed copyright owner to "Red Hat, Inc." in license headers (#5964) 2017-08-11 10:46:58 +03:00
test Changed copyright owner to "Red Hat, Inc." in license headers (#5964) 2017-08-11 10:46:58 +03:00
README.md Use https instead of http in web links. (#4276) 2017-03-01 14:58:58 +02:00
build.include Allow to build all Dockerfile that are in a given directory. 2017-11-15 07:48:49 +01:00
build.sh Multi-user Eclipse Che (#6441) 2017-10-06 17:27:27 +03:00

README.md

Eclipse Che - Dockerfiles

This che-dockerfiles repository is where all dockerfiles for Che Launcher, Che's CLI and Che's Stacks are hosted.

Eclipse Che

Join the chat at https://gitter.im/eclipse/che Eclipse License Build Status

https://www.eclipse.org/che/. Next-generation Eclipse platform, developer workspace server and cloud IDE. Che defines workspaces that include their dependencies including embedded containerized runtimes, Web IDE, and project code. This makes workspaces distributed, collaborative, and portable to run anywhere on a desktop or a server ... Read More

Eclipse Che

Getting Started

You can run Che in the public cloud, a private cloud, or install it on any OS. Che has been tested on Ubuntu, Linux, MacOS and Windows. The step by step guide will get you going.

The che repository is where we do development and there are many ways you can participate, for example:

Customizing

There are many ways to customize Che out-of-the-box including stacks, templates, commands, IDE extensions, server-side extensions plugins, assemblies, RESTful APIs, and editors.

Contributing

If you are interested in fixing issues and contributing directly to the code base, please see How to Contribute. It covers:

Feedback

  • Support: You can ask questions, report bugs, and request features using GitHub issues.
  • Roadmap: We maintain the roadmap on the wiki.
  • Weekly Meetings: Join us on a hangout.

License

Che is open sourced under the Eclipse Public License 1.0.