Re: EC2 small instance config?

2010-07-07 Thread Andrew Rollins
On Wed, Jul 7, 2010 at 2:27 AM, Michael Dürgner wrote: > Have you done some testing with small nodes already? Because from what we > saw trying to run IO bound services on small instances is, that their IO > performance is really bad compared to other instance types as you can read > in several b

EC2 small instance config?

2010-07-06 Thread Andrew Rollins
Anyone using Amazon EC2 small instances for a production cluster under reasonably high loads (perhaps hundreds or low thousands ops/sec)? I'm looking for an example storage-conf.xml file to use as a guide. If you've done one and would be willing to share, please let me know. I'm willing to bet a

Re: Write assurance in Cassandra

2010-07-04 Thread Andrew Rollins
things much better. > > However, my configuration is as follows: > > periodic > 1 > > So I should see my commit log change after 10,000 milliseconds = 10 > seconds? It seems to take much longer to show up. > > On Sun, Jul 4, 2010 at 10:52 AM, Andrew Rollins wrote: &

Re: Write assurance in Cassandra

2010-07-04 Thread Andrew Rollins
By default Cassandra syncs the commit log to disk periodically, so if you are looking at file sizes, you won't see the most up to date numbers. This is just like how if you tail a file that isn't flushing frequently, you might wait a little while before you see the updates. In periodic mode, Cassa