I found it interesting, but have to admit I scanned through to read about provisioned IOPs almost right away and was disappointed that there weren't any benchmarks.
Yes -- unfortunately, Amazon announced provisioned IOPs approximately the day after we finished the benchmarking work. It took a while to find time to write up the results.
We'll very likely do a followup post to test provisioned IOPs. If anyone has other suggestions to include in the followup work, please let us know.
"EBS Optimized" instances dedicate an extra 1 GigE interface just for EBS IO. If your application causes contention between it's service and EBS IO, "EBS Optimized" instances may be for you. Unfortunately, I haven't seen any benchmarking on it yet.
