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From "Matt Stump (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-8150) Simplify and enlarge new heap calculation
Date Mon, 20 Oct 2014 17:38:33 GMT
Matt Stump created CASSANDRA-8150:

             Summary: Simplify and enlarge new heap calculation
                 Key: CASSANDRA-8150
             Project: Cassandra
          Issue Type: Improvement
          Components: Config
            Reporter: Matt Stump

It's been found that the old twitter recommendations of 100m per core up to 800m is harmful
and should no longer be used.

Instead the formula used should be 1/3 or 1/4 max heap with a max of 2G. 1/3 or 1/4 is debatable
and I'm open to suggestions. If I were to hazard a guess 1/3 is probably better for releases
greater than 2.1.

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