I've done some long-running benchmarks of EC2, mostly for kicks and personal edification. For about 8 months now, I've had a job running on an EC2 "small" inst

I've done some long-running benchmarks of EC2, mostly for kicks and personal edification. For about 8 months now, I've had a job running on an EC2 "small" instance, that performs a suite of microbencharks every 10 seconds and records the results. Lots of raw data can be found here: http://amistrongeryet.com/dashboard.jsp http://amistrongeryet.com/dashboard.jsp This covers a variety of AWS operations, ranging from simple EC2 CPU benchmarks to SimpleDB and RDS operations. I also include some measurements of Google App Engine. I've put a lot of focus on measuring variation over time, and measuring outliers (i.e. 99.9th percentile, not just mean). I'd like to measure variation across instances, but haven't gotten around to it. The web site linked above has no documentation at the moment, and is a bit broken in other ways, but the data may be of interest. I have a little blog (http://amistrongeryet.blogspot.com/ http://amistrongeryet.blogspot.com/) where I've discussed some of my findings, e.g. http://amistrongeryet.blogspot.com/2010/04/early-results-on-gae-and-aws.html http://amistrongeryet.blogspot.com/2010/04/early-results-on-..., http://amistrongeryet.blogspot.com/2010/04/beginnings-of-robust-data-collector.html http://amistrongeryet.blogspot.com/2010/04/beginnings-of-rob..., and http://amistrongeryet.blogspot.com/2010/04/cloud-data-storage-many-choices-all-bad.html http://amistrongeryet.blogspot.com/2010/04/cloud-data-storag.... If there's interest, I'll put a little effort into cleaning up and documenting the data reporting site.