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Published 20 hours ago • verified publisher icon instaclustr

C* preferred heap size settings

Open benbromhead opened this issue 5 years ago • 1 comments

On an 8Gi pod claim, we are setting heap size to 2GB. Is this optimal? I know we need to leave space for offheap but this is probably a bit too conservative. Maybe minimum recommended pod size should be 16GB (8 miniumum for heap, 8 for offheap)

INFO [main] 2018-10-08 17:52:27,082 CassandraDaemon.java:481 - Heap size: 2.000GiB/2.000GiB

benbromhead avatar Oct 08 '18 18:10 benbromhead

Yes, these could be tuned better. See https://github.com/instaclustr/cassandra-operator/blob/master/java/operator/src/main/java/com/instaclustr/cassandra/operator/controller/DataCenterReconciliationController.java#L324

That logic should be similar to the default cassandra-env.sh, but this should be confirmed.

zegelin avatar Oct 08 '18 18:10 zegelin