How does one configure jruby JVM settings on Heroku?

StackOverflow https://stackoverflow.com/questions/19981721

  •  30-07-2022
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Question

I'm running a rails app with jruby on heroku. I want to configure how much memory is allocated to the JVM. How do I do this?

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Solution 

heroku config:add JRUBY_OPTS="--1.9 -J-Xmn128m -J-Xms768m -J-Xmx768m"
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