Performance tuning on Helm

[Komgrit Aneksri]

Hi GoCD team,

I want to do GoCD server performance tuning.

And I read this page https://docs.gocd.org/current/installation/performance_tuning.html

My current GoCD server installed by helm.

How to perform tunning JVM in Helm value as below. Could you suggest me? 

# We recommend that you begin with the index `100` and increment the index for each system property. # use minimum JVM heap of 4gb wrapper.java.additional.100=-Xms4g # use maximum JVM heap of 8gb wrapper.java.additional.101=-Xmx8g

Regards,

Komgrit

[Chad Wilson]

--set "server.env.goServerJvmOpts=-Xms4g -Xmx8g"

...or the equivalent inside a values.yaml override:

server:

  env:

    goServerJvmOpts: "-Xms4g -Xmx8g"

There are multiple ways, but this is the easiest and most helm-native. It maps to the env var documented for the container image under "Tweaking JVM options" at https://hub.docker.com/r/gocd/gocd-server/

-Chad

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[Komgrit Aneksri]

Thank you Chad,

And I want to do the garbage collection after I found this warning message

Action required: Run 'git gc' on config.git repo21 Mar, 2025 at 08:28:15 Local Time

Number of loose objects in your Configuration repository(config.git) has grown beyond the configured threshold. As the size of config repo increases, the config save operations tend to slow down drastically. It is recommended that you run 'git gc' from '<go server installation directory>/db/config.git/' to address this problem. Go can do this automatically on a periodic basis if you enable automatic GC.

How to configure System properties that affect periodic garbage collection in helm?

Best Regards,

Komgrit

[Komgrit Aneksri]

Sorry I forgot refer System properties garbage collection link
https://docs.gocd.org/23.1.0/advanced_usage/config_repo.html

Regards,

Komgrit

[Chad Wilson]

Adding to the same JVM opts the relevant args like the below should do it. The default cron is weekly on Sunday so you don't need to override that if you don't want to

 -Dgo.config.repo.gc.periodic=true

See the other options per https://docs.gocd.org/current/advanced_usage/config_repo.html

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[Komgrit Aneksri]

Hello Chad,

Thank you for your answer again.

I deployed as below 

server:
  env:
    goServerJvmOpts: "-Xms4g -Xmx8g -Dgo.config.repo.gc.periodic=true"

Regards,

Komgrit