Daily release builds take a long time

This is a…

[ ] Feature request
[ ] Regression (a behavior that used to work and stopped working in a new release)
[x] Bug report  
[ ] Documentation issue or request

Description

I was able to narrow this down to this command taking a lot of CPU:

/mnt/hudson_workspace/workspace/syndesis-release-daily/app/ui-react/node/node --max-old-space-size=2048 /mnt/hudson_workspace/workspace/syndesis-release-daily/app/ui-react/node_modules/fork-ts-checker-webpack-plugin/lib/service.js

And with @riccardo-forina’s help narrowed it down to this issue https://github.com/facebook/create-react-app/issues/6792.

[zregvart]

I managed to get a daily build (1.7.1-20190605), closing this.

[paoloantinori]

I’ve missed this message. Good to know, I’ll try to tweak the setup just to learn something new

On Mon, 3 Jun 2019, 12:34 Zoran Regvart, [e-mail] wrote:

@paoloantinori https://github.com/paoloantinori I can’t reproduce this issue using your instructions https://gist.github.com/paoloantinori/3e1ed14f75c1e3e332bce8b11b34706c, I can reproduce a memory issue, not the same memory issue, of getting killed by the OOM killer when running with 2GB of RAM and without any swap.

This is how I tried to reproduce the issue locally:

Ran a Docker container specified Dockerfile, to create the build image:

FROM docker.io/adoptopenjdk:8-hotspot RUN apt-get update -y
&& apt-get install -y git
&& rm -rf /var/lib/apt/lists/*

Like this:

$ docker run -it -m 2G --memory-swappiness 0 --privileged -u $(id -u)😒(id -g) --ulimit nofile=122880:122880 -v pwd:/work -e HOME=/tmp build /bin/bash`

And in the container I ran;

$ cd /work; ./mvnw -f ui-react clean verify

That leads me to believe that in your case the 300MB of memory was not the total amount of memory used, but also (probably a large) amount of swap was used.

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