Hi Jonathan, yes, when I say 'node encryption' I mean inter-Cassandra node encryption. When I say 'client encryption' I mean encrypted traffic from the Cassandra nodes to the clients. For these benchmarks we used the stress test client load generator.
We ran test with no encryption, then with 'node only' and then again with both node and client encryption. Looking at the post again right now I realize that I never mention the client encryption technique. My mistake. We just used OpenVPN. We set it up on the client stress test machine and set up individual VPNs to each Cassandra node in the cluster. I tired to make it clear in my post where the performance gains were coming from. Didn't mean to confuse anyone. That said, if you're running in a public cloud and you want to encrypt, you've got to tackle the client traffic encryption problem as well so it seemed like performance gains that most could expect. CM On Mon, Jan 23, 2012 at 7:46 PM, Jonathan Ellis <jbel...@gmail.com> wrote: > Can you elaborate on to what exactly you were testing on the Cassandra > side? It sounds like what this post refers to as "node" encryption > corresponds to enabling "internode_encryption: all", but I couldn't > guess what your client encryption is since Cassandra doesn't support > that out of the box yet. (Which is highly relevant since that's where > most of the slowdown you observed comes from.) > > On Fri, Dec 30, 2011 at 2:11 PM, Chris Marino <ch...@vcider.com> wrote: > > We did some benchmarking as well. > > > > > http://blog.vcider.com/2011/09/virtual-networks-can-run-cassandra-up-to-60-faster/ > > > > Although we were primarily interested in the networking issues.... > > > > CM > > > > > > On Fri, Dec 30, 2011 at 12:08 PM, Jeremy Hanna < > jeremy.hanna1...@gmail.com> > > wrote: > >> > >> This might be helpful: > >> > http://techblog.netflix.com/2011/11/benchmarking-cassandra-scalability-on.html > >> > >> On Dec 30, 2011, at 1:59 PM, Dom Wong wrote: > >> > >> > Hi, could anyone tell me whether this is possible with Cassandra using > >> > an appropriately sized EC2 cluster. > >> > > >> > 100,000 clients writing 50k each to their own specific row at 5 second > >> > intervals? > >> > > > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of DataStax, the source for professional Cassandra support > http://www.datastax.com >
