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Matt Stump commented on CASSANDRA-8150: --------------------------------------- That's not quite true: https://github.com/apache/cassandra/blob/trunk/conf/cassandra-env.sh#L75-L77 We'll use the min((100 * cores), (1/4 * max_heap)) Please reopen. > Simplify and enlarge new heap calculation > ----------------------------------------- > > Key: CASSANDRA-8150 > URL: https://issues.apache.org/jira/browse/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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)