RE: OldGen saturation

2014-10-29 Thread Adria Arcarons
: OldGen saturation Hi AdriĆ , We have about 50.000 CFs of varying size Before I read any further, having 50,000 CFs is something that I would highly discourage. Each column family is allocated 1MB of available memory (CASSANDRA-2252<https://issues.apache.org/jira/browse/CASSANDRA-2252>) so

Re: OldGen saturation

2014-10-28 Thread Mark Reddy
Hi AdriĆ , We have about 50.000 CFs of varying size Before I read any further, having 50,000 CFs is something that I would highly discourage. Each column family is allocated 1MB of available memory ( CASSANDRA-2252 ) so having anything over a

Re: OldGen saturation

2014-10-28 Thread Bryan Talbot
On Tue, Oct 28, 2014 at 9:02 AM, Adria Arcarons < adria.arcar...@greenpowermonitor.com> wrote: > Hi, > > Hi > > > We have about 50.000 CFs of varying size > > > > > The writing test consists of a continuous flow of inserts. The inserts are > done inside BATCH statements in groups of 1.000 t

OldGen saturation

2014-10-28 Thread Adria Arcarons
Hi, I work for a company that gathers time series data from different sensors. I've been trying to set up C* in a single-node test environment in order to have an idea of what performance will Cassandra give in our use case. To do so I have implemented a test to simulate our real insertion patt