Re: Cassandra memory needs

2011-02-02 Thread buddhasystem
cause the swap death of your machine (i.e. when you go too high on JVM memory). Regards Maxim -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-memory-needs-tp5986663p5986911.html Sent from the cassandra-u...@incubator.apache.org mai

Re: Cassandra memory needs

2011-02-02 Thread Peter Schuller
> I am trying to understand the relationship between data set/SSTable(s) size > and > Cassandra heap. http://wiki.apache.org/cassandra/LargeDataSetConsiderations > For a rough rule of thumb, Cassandra's internal datastructures will require > about  memtable_throughput_in_mb * 3 * number of hot C

Cassandra memory needs

2011-02-02 Thread Oleg Proudnikov
Hi All, I am trying to understand the relationship between data set/SSTable(s) size and Cassandra heap. Q1. Here is the memory calc from the Wiki: For a rough rule of thumb, Cassandra's internal datastructures will require about memtable_throughput_in_mb * 3 * number of hot CFs + 1G + internal