[CASSANDRA-8150] Revaluate Default JVM tuning parameters

• Type: Improvement
• Status: Open
• Priority: Normal
• Resolution: Unresolved
• Component/s: Local/Config
• Labels: remove-reopen
• Assignee: Unassigned
• Reporter: Matt Stump
• Created: 20/Oct/14 17:37
• Updated: 02/Nov/22 14:59

Description

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.